drivers/net/ethernet/neterion/vxge/vxge-main.c

   1 /******************************************************************************
   2 * This software may be used and distributed according to the terms of
   3 * the GNU General Public License (GPL), incorporated herein by reference.
   4 * Drivers based on or derived from this code fall under the GPL and must
   5 * retain the authorship, copyright and license notice.  This file is not
   6 * a complete program and may only be used when the entire operating
   7 * system is licensed under the GPL.
   8 * See the file COPYING in this distribution for more information.
   9 *
  10 * vxge-main.c: Driver for Exar Corp's X3100 Series 10GbE PCIe I/O
  11 *              Virtualized Server Adapter.
  12 * Copyright(c) 2002-2010 Exar Corp.
  13 *
  14 * The module loadable parameters that are supported by the driver and a brief
  15 * explanation of all the variables:
  16 * vlan_tag_strip:
  17 *       Strip VLAN Tag enable/disable. Instructs the device to remove
  18 *       the VLAN tag from all received tagged frames that are not
  19 *       replicated at the internal L2 switch.
  20 *               0 - Do not strip the VLAN tag.
  21 *               1 - Strip the VLAN tag.
  22 *
  23 * addr_learn_en:
  24 *       Enable learning the mac address of the guest OS interface in
  25 *       a virtualization environment.
  26 *               0 - DISABLE
  27 *               1 - ENABLE
  28 *
  29 * max_config_port:
  30 *       Maximum number of port to be supported.
  31 *               MIN -1 and MAX - 2
  32 *
  33 * max_config_vpath:
  34 *       This configures the maximum no of VPATH configures for each
  35 *       device function.
  36 *               MIN - 1 and MAX - 17
  37 *
  38 * max_config_dev:
  39 *       This configures maximum no of Device function to be enabled.
  40 *               MIN - 1 and MAX - 17
  41 *
  42 ******************************************************************************/
  43
  44 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  45
  46 #include <linux/bitops.h>
  47 #include <linux/if_vlan.h>
  48 #include <linux/interrupt.h>
  49 #include <linux/pci.h>
  50 #include <linux/slab.h>
  51 #include <linux/tcp.h>
  52 #include <net/ip.h>
  53 #include <linux/netdevice.h>
  54 #include <linux/etherdevice.h>
  55 #include <linux/firmware.h>
  56 #include <linux/net_tstamp.h>
  57 #include <linux/prefetch.h>
  58 #include <linux/module.h>
  59 #include "vxge-main.h"
  60 #include "vxge-reg.h"
  61
  62 MODULE_LICENSE("Dual BSD/GPL");
  63 MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
  64         "Virtualized Server Adapter");
  65
  66 static const struct pci_device_id vxge_id_table[] = {
  67         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
  68         PCI_ANY_ID},
  69         {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
  70         PCI_ANY_ID},
  71         {0}
  72 };
  73
  74 MODULE_DEVICE_TABLE(pci, vxge_id_table);
  75
  76 VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
  77 VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
  78 VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
  79 VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
  80 VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
  81 VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);
  82
  83 static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
  84                 {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
  85 static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
  86         {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
  87 module_param_array(bw_percentage, uint, NULL, 0);
  88
  89 static struct vxge_drv_config *driver_config;
  90 static enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev);
  91
  92 static inline int is_vxge_card_up(struct vxgedev *vdev)
  93 {
  94         return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
  95 }
  96
  97 static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
  98 {
  99         struct sk_buff **skb_ptr = NULL;
 100         struct sk_buff **temp;
 101 #define NR_SKB_COMPLETED 128
 102         struct sk_buff *completed[NR_SKB_COMPLETED];
 103         int more;
 104
 105         do {
 106                 more = 0;
 107                 skb_ptr = completed;
 108
 109                 if (__netif_tx_trylock(fifo->txq)) {
 110                         vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
 111                                                 NR_SKB_COMPLETED, &more);
 112                         __netif_tx_unlock(fifo->txq);
 113                 }
 114
 115                 /* free SKBs */
 116                 for (temp = completed; temp != skb_ptr; temp++)
 117                         dev_kfree_skb_irq(*temp);
 118         } while (more);
 119 }
 120
 121 static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
 122 {
 123         int i;
 124
 125         /* Complete all transmits */
 126         for (i = 0; i < vdev->no_of_vpath; i++)
 127                 VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
 128 }
 129
 130 static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
 131 {
 132         int i;
 133         struct vxge_ring *ring;
 134
 135         /* Complete all receives*/
 136         for (i = 0; i < vdev->no_of_vpath; i++) {
 137                 ring = &vdev->vpaths[i].ring;
 138                 vxge_hw_vpath_poll_rx(ring->handle);
 139         }
 140 }
 141
 142 /*
 143  * vxge_callback_link_up
 144  *
 145  * This function is called during interrupt context to notify link up state
 146  * change.
 147  */
 148 static void vxge_callback_link_up(struct __vxge_hw_device *hldev)
 149 {
 150         struct net_device *dev = hldev->ndev;
 151         struct vxgedev *vdev = netdev_priv(dev);
 152
 153         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 154                 vdev->ndev->name, __func__, __LINE__);
 155         netdev_notice(vdev->ndev, "Link Up\n");
 156         vdev->stats.link_up++;
 157
 158         netif_carrier_on(vdev->ndev);
 159         netif_tx_wake_all_queues(vdev->ndev);
 160
 161         vxge_debug_entryexit(VXGE_TRACE,
 162                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 163 }
 164
 165 /*
 166  * vxge_callback_link_down
 167  *
 168  * This function is called during interrupt context to notify link down state
 169  * change.
 170  */
 171 static void vxge_callback_link_down(struct __vxge_hw_device *hldev)
 172 {
 173         struct net_device *dev = hldev->ndev;
 174         struct vxgedev *vdev = netdev_priv(dev);
 175
 176         vxge_debug_entryexit(VXGE_TRACE,
 177                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
 178         netdev_notice(vdev->ndev, "Link Down\n");
 179
 180         vdev->stats.link_down++;
 181         netif_carrier_off(vdev->ndev);
 182         netif_tx_stop_all_queues(vdev->ndev);
 183
 184         vxge_debug_entryexit(VXGE_TRACE,
 185                 "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
 186 }
 187
 188 /*
 189  * vxge_rx_alloc
 190  *
 191  * Allocate SKB.
 192  */
 193 static struct sk_buff *
 194 vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
 195 {
 196         struct net_device    *dev;
 197         struct sk_buff       *skb;
 198         struct vxge_rx_priv *rx_priv;
 199
 200         dev = ring->ndev;
 201         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 202                 ring->ndev->name, __func__, __LINE__);
 203
 204         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 205
 206         /* try to allocate skb first. this one may fail */
 207         skb = netdev_alloc_skb(dev, skb_size +
 208         VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 209         if (skb == NULL) {
 210                 vxge_debug_mem(VXGE_ERR,
 211                         "%s: out of memory to allocate SKB", dev->name);
 212                 ring->stats.skb_alloc_fail++;
 213                 return NULL;
 214         }
 215
 216         vxge_debug_mem(VXGE_TRACE,
 217                 "%s: %s:%d  Skb : 0x%p", ring->ndev->name,
 218                 __func__, __LINE__, skb);
 219
 220         skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 221
 222         rx_priv->skb = skb;
 223         rx_priv->skb_data = NULL;
 224         rx_priv->data_size = skb_size;
 225         vxge_debug_entryexit(VXGE_TRACE,
 226                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 227
 228         return skb;
 229 }
 230
 231 /*
 232  * vxge_rx_map
 233  */
 234 static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
 235 {
 236         struct vxge_rx_priv *rx_priv;
 237         dma_addr_t dma_addr;
 238
 239         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 240                 ring->ndev->name, __func__, __LINE__);
 241         rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 242
 243         rx_priv->skb_data = rx_priv->skb->data;
 244         dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
 245                                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
 246
 247         if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) {
 248                 ring->stats.pci_map_fail++;
 249                 return -EIO;
 250         }
 251         vxge_debug_mem(VXGE_TRACE,
 252                 "%s: %s:%d  1 buffer mode dma_addr = 0x%llx",
 253                 ring->ndev->name, __func__, __LINE__,
 254                 (unsigned long long)dma_addr);
 255         vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);
 256
 257         rx_priv->data_dma = dma_addr;
 258         vxge_debug_entryexit(VXGE_TRACE,
 259                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 260
 261         return 0;
 262 }
 263
 264 /*
 265  * vxge_rx_initial_replenish
 266  * Allocation of RxD as an initial replenish procedure.
 267  */
 268 static enum vxge_hw_status
 269 vxge_rx_initial_replenish(void *dtrh, void *userdata)
 270 {
 271         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 272         struct vxge_rx_priv *rx_priv;
 273
 274         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 275                 ring->ndev->name, __func__, __LINE__);
 276         if (vxge_rx_alloc(dtrh, ring,
 277                           VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
 278                 return VXGE_HW_FAIL;
 279
 280         if (vxge_rx_map(dtrh, ring)) {
 281                 rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
 282                 dev_kfree_skb(rx_priv->skb);
 283
 284                 return VXGE_HW_FAIL;
 285         }
 286         vxge_debug_entryexit(VXGE_TRACE,
 287                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 288
 289         return VXGE_HW_OK;
 290 }
 291
 292 static inline void
 293 vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
 294                  int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
 295 {
 296
 297         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 298                         ring->ndev->name, __func__, __LINE__);
 299         skb_record_rx_queue(skb, ring->driver_id);
 300         skb->protocol = eth_type_trans(skb, ring->ndev);
 301
 302         u64_stats_update_begin(&ring->stats.syncp);
 303         ring->stats.rx_frms++;
 304         ring->stats.rx_bytes += pkt_length;
 305
 306         if (skb->pkt_type == PACKET_MULTICAST)
 307                 ring->stats.rx_mcast++;
 308         u64_stats_update_end(&ring->stats.syncp);
 309
 310         vxge_debug_rx(VXGE_TRACE,
 311                 "%s: %s:%d  skb protocol = %d",
 312                 ring->ndev->name, __func__, __LINE__, skb->protocol);
 313
 314         if (ext_info->vlan &&
 315             ring->vlan_tag_strip == VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE)
 316                 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ext_info->vlan);
 317         napi_gro_receive(ring->napi_p, skb);
 318
 319         vxge_debug_entryexit(VXGE_TRACE,
 320                 "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
 321 }
 322
 323 static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
 324                                     struct vxge_rx_priv *rx_priv)
 325 {
 326         pci_dma_sync_single_for_device(ring->pdev,
 327                 rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);
 328
 329         vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
 330         vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
 331 }
 332
 333 static inline void vxge_post(int *dtr_cnt, void **first_dtr,
 334                              void *post_dtr, struct __vxge_hw_ring *ringh)
 335 {
 336         int dtr_count = *dtr_cnt;
 337         if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
 338                 if (*first_dtr)
 339                         vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
 340                 *first_dtr = post_dtr;
 341         } else
 342                 vxge_hw_ring_rxd_post_post(ringh, post_dtr);
 343         dtr_count++;
 344         *dtr_cnt = dtr_count;
 345 }
 346
 347 /*
 348  * vxge_rx_1b_compl
 349  *
 350  * If the interrupt is because of a received frame or if the receive ring
 351  * contains fresh as yet un-processed frames, this function is called.
 352  */
 353 static enum vxge_hw_status
 354 vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
 355                  u8 t_code, void *userdata)
 356 {
 357         struct vxge_ring *ring = (struct vxge_ring *)userdata;
 358         struct net_device *dev = ring->ndev;
 359         unsigned int dma_sizes;
 360         void *first_dtr = NULL;
 361         int dtr_cnt = 0;
 362         int data_size;
 363         dma_addr_t data_dma;
 364         int pkt_length;
 365         struct sk_buff *skb;
 366         struct vxge_rx_priv *rx_priv;
 367         struct vxge_hw_ring_rxd_info ext_info;
 368         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 369                 ring->ndev->name, __func__, __LINE__);
 370
 371         if (ring->budget <= 0)
 372                 goto out;
 373
 374         do {
 375                 prefetch((char *)dtr + L1_CACHE_BYTES);
 376                 rx_priv = vxge_hw_ring_rxd_private_get(dtr);
 377                 skb = rx_priv->skb;
 378                 data_size = rx_priv->data_size;
 379                 data_dma = rx_priv->data_dma;
 380                 prefetch(rx_priv->skb_data);
 381
 382                 vxge_debug_rx(VXGE_TRACE,
 383                         "%s: %s:%d  skb = 0x%p",
 384                         ring->ndev->name, __func__, __LINE__, skb);
 385
 386                 vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
 387                 pkt_length = dma_sizes;
 388
 389                 pkt_length -= ETH_FCS_LEN;
 390
 391                 vxge_debug_rx(VXGE_TRACE,
 392                         "%s: %s:%d  Packet Length = %d",
 393                         ring->ndev->name, __func__, __LINE__, pkt_length);
 394
 395                 vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);
 396
 397                 /* check skb validity */
 398                 vxge_assert(skb);
 399
 400                 prefetch((char *)skb + L1_CACHE_BYTES);
 401                 if (unlikely(t_code)) {
 402                         if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
 403                                 VXGE_HW_OK) {
 404
 405                                 ring->stats.rx_errors++;
 406                                 vxge_debug_rx(VXGE_TRACE,
 407                                         "%s: %s :%d Rx T_code is %d",
 408                                         ring->ndev->name, __func__,
 409                                         __LINE__, t_code);
 410
 411                                 /* If the t_code is not supported and if the
 412                                  * t_code is other than 0x5 (unparseable packet
 413                                  * such as unknown UPV6 header), Drop it !!!
 414                                  */
 415                                 vxge_re_pre_post(dtr, ring, rx_priv);
 416
 417                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 418                                 ring->stats.rx_dropped++;
 419                                 continue;
 420                         }
 421                 }
 422
 423                 if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
 424                         if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
 425                                 if (!vxge_rx_map(dtr, ring)) {
 426                                         skb_put(skb, pkt_length);
 427
 428                                         pci_unmap_single(ring->pdev, data_dma,
 429                                                 data_size, PCI_DMA_FROMDEVICE);
 430
 431                                         vxge_hw_ring_rxd_pre_post(ringh, dtr);
 432                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 433                                                 ringh);
 434                                 } else {
 435                                         dev_kfree_skb(rx_priv->skb);
 436                                         rx_priv->skb = skb;
 437                                         rx_priv->data_size = data_size;
 438                                         vxge_re_pre_post(dtr, ring, rx_priv);
 439
 440                                         vxge_post(&dtr_cnt, &first_dtr, dtr,
 441                                                 ringh);
 442                                         ring->stats.rx_dropped++;
 443                                         break;
 444                                 }
 445                         } else {
 446                                 vxge_re_pre_post(dtr, ring, rx_priv);
 447
 448                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 449                                 ring->stats.rx_dropped++;
 450                                 break;
 451                         }
 452                 } else {
 453                         struct sk_buff *skb_up;
 454
 455                         skb_up = netdev_alloc_skb(dev, pkt_length +
 456                                 VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 457                         if (skb_up != NULL) {
 458                                 skb_reserve(skb_up,
 459                                     VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
 460
 461                                 pci_dma_sync_single_for_cpu(ring->pdev,
 462                                         data_dma, data_size,
 463                                         PCI_DMA_FROMDEVICE);
 464
 465                                 vxge_debug_mem(VXGE_TRACE,
 466                                         "%s: %s:%d  skb_up = %p",
 467                                         ring->ndev->name, __func__,
 468                                         __LINE__, skb);
 469                                 memcpy(skb_up->data, skb->data, pkt_length);
 470
 471                                 vxge_re_pre_post(dtr, ring, rx_priv);
 472
 473                                 vxge_post(&dtr_cnt, &first_dtr, dtr,
 474                                         ringh);
 475                                 /* will netif_rx small SKB instead */
 476                                 skb = skb_up;
 477                                 skb_put(skb, pkt_length);
 478                         } else {
 479                                 vxge_re_pre_post(dtr, ring, rx_priv);
 480
 481                                 vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
 482                                 vxge_debug_rx(VXGE_ERR,
 483                                         "%s: vxge_rx_1b_compl: out of "
 484                                         "memory", dev->name);
 485                                 ring->stats.skb_alloc_fail++;
 486                                 break;
 487                         }
 488                 }
 489
 490                 if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
 491                     !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
 492                     (dev->features & NETIF_F_RXCSUM) && /* Offload Rx side CSUM */
 493                     ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
 494                     ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
 495                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 496                 else
 497                         skb_checksum_none_assert(skb);
 498
 499
 500                 if (ring->rx_hwts) {
 501                         struct skb_shared_hwtstamps *skb_hwts;
 502                         u32 ns = *(u32 *)(skb->head + pkt_length);
 503
 504                         skb_hwts = skb_hwtstamps(skb);
 505                         skb_hwts->hwtstamp = ns_to_ktime(ns);
 506                 }
 507
 508                 /* rth_hash_type and rth_it_hit are non-zero regardless of
 509                  * whether rss is enabled.  Only the rth_value is zero/non-zero
 510                  * if rss is disabled/enabled, so key off of that.
 511                  */
 512                 if (ext_info.rth_value)
 513                         skb_set_hash(skb, ext_info.rth_value,
 514                                      PKT_HASH_TYPE_L3);
 515
 516                 vxge_rx_complete(ring, skb, ext_info.vlan,
 517                         pkt_length, &ext_info);
 518
 519                 ring->budget--;
 520                 ring->pkts_processed++;
 521                 if (!ring->budget)
 522                         break;
 523
 524         } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
 525                 &t_code) == VXGE_HW_OK);
 526
 527         if (first_dtr)
 528                 vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
 529
 530 out:
 531         vxge_debug_entryexit(VXGE_TRACE,
 532                                 "%s:%d  Exiting...",
 533                                 __func__, __LINE__);
 534         return VXGE_HW_OK;
 535 }
 536
 537 /*
 538  * vxge_xmit_compl
 539  *
 540  * If an interrupt was raised to indicate DMA complete of the Tx packet,
 541  * this function is called. It identifies the last TxD whose buffer was
 542  * freed and frees all skbs whose data have already DMA'ed into the NICs
 543  * internal memory.
 544  */
 545 static enum vxge_hw_status
 546 vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
 547                 enum vxge_hw_fifo_tcode t_code, void *userdata,
 548                 struct sk_buff ***skb_ptr, int nr_skb, int *more)
 549 {
 550         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
 551         struct sk_buff *skb, **done_skb = *skb_ptr;
 552         int pkt_cnt = 0;
 553
 554         vxge_debug_entryexit(VXGE_TRACE,
 555                 "%s:%d Entered....", __func__, __LINE__);
 556
 557         do {
 558                 int frg_cnt;
 559                 skb_frag_t *frag;
 560                 int i = 0, j;
 561                 struct vxge_tx_priv *txd_priv =
 562                         vxge_hw_fifo_txdl_private_get(dtr);
 563
 564                 skb = txd_priv->skb;
 565                 frg_cnt = skb_shinfo(skb)->nr_frags;
 566                 frag = &skb_shinfo(skb)->frags[0];
 567
 568                 vxge_debug_tx(VXGE_TRACE,
 569                                 "%s: %s:%d fifo_hw = %p dtr = %p "
 570                                 "tcode = 0x%x", fifo->ndev->name, __func__,
 571                                 __LINE__, fifo_hw, dtr, t_code);
 572                 /* check skb validity */
 573                 vxge_assert(skb);
 574                 vxge_debug_tx(VXGE_TRACE,
 575                         "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
 576                         fifo->ndev->name, __func__, __LINE__,
 577                         skb, txd_priv, frg_cnt);
 578                 if (unlikely(t_code)) {
 579                         fifo->stats.tx_errors++;
 580                         vxge_debug_tx(VXGE_ERR,
 581                                 "%s: tx: dtr %p completed due to "
 582                                 "error t_code %01x", fifo->ndev->name,
 583                                 dtr, t_code);
 584                         vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
 585                 }
 586
 587                 /*  for unfragmented skb */
 588                 pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
 589                                 skb_headlen(skb), PCI_DMA_TODEVICE);
 590
 591                 for (j = 0; j < frg_cnt; j++) {
 592                         pci_unmap_page(fifo->pdev,
 593                                         txd_priv->dma_buffers[i++],
 594                                         skb_frag_size(frag), PCI_DMA_TODEVICE);
 595                         frag += 1;
 596                 }
 597
 598                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 599
 600                 /* Updating the statistics block */
 601                 u64_stats_update_begin(&fifo->stats.syncp);
 602                 fifo->stats.tx_frms++;
 603                 fifo->stats.tx_bytes += skb->len;
 604                 u64_stats_update_end(&fifo->stats.syncp);
 605
 606                 *done_skb++ = skb;
 607
 608                 if (--nr_skb <= 0) {
 609                         *more = 1;
 610                         break;
 611                 }
 612
 613                 pkt_cnt++;
 614                 if (pkt_cnt > fifo->indicate_max_pkts)
 615                         break;
 616
 617         } while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
 618                                 &dtr, &t_code) == VXGE_HW_OK);
 619
 620         *skb_ptr = done_skb;
 621         if (netif_tx_queue_stopped(fifo->txq))
 622                 netif_tx_wake_queue(fifo->txq);
 623
 624         vxge_debug_entryexit(VXGE_TRACE,
 625                                 "%s: %s:%d  Exiting...",
 626                                 fifo->ndev->name, __func__, __LINE__);
 627         return VXGE_HW_OK;
 628 }
 629
 630 /* select a vpath to transmit the packet */
 631 static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb)
 632 {
 633         u16 queue_len, counter = 0;
 634         if (skb->protocol == htons(ETH_P_IP)) {
 635                 struct iphdr *ip;
 636                 struct tcphdr *th;
 637
 638                 ip = ip_hdr(skb);
 639
 640                 if (!ip_is_fragment(ip)) {
 641                         th = (struct tcphdr *)(((unsigned char *)ip) +
 642                                         ip->ihl*4);
 643
 644                         queue_len = vdev->no_of_vpath;
 645                         counter = (ntohs(th->source) +
 646                                 ntohs(th->dest)) &
 647                                 vdev->vpath_selector[queue_len - 1];
 648                         if (counter >= queue_len)
 649                                 counter = queue_len - 1;
 650                 }
 651         }
 652         return counter;
 653 }
 654
 655 static enum vxge_hw_status vxge_search_mac_addr_in_list(
 656         struct vxge_vpath *vpath, u64 del_mac)
 657 {
 658         struct list_head *entry, *next;
 659         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
 660                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
 661                         return TRUE;
 662         }
 663         return FALSE;
 664 }
 665
 666 static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
 667 {
 668         struct vxge_mac_addrs *new_mac_entry;
 669         u8 *mac_address = NULL;
 670
 671         if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
 672                 return TRUE;
 673
 674         new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
 675         if (!new_mac_entry) {
 676                 vxge_debug_mem(VXGE_ERR,
 677                         "%s: memory allocation failed",
 678                         VXGE_DRIVER_NAME);
 679                 return FALSE;
 680         }
 681
 682         list_add(&new_mac_entry->item, &vpath->mac_addr_list);
 683
 684         /* Copy the new mac address to the list */
 685         mac_address = (u8 *)&new_mac_entry->macaddr;
 686         memcpy(mac_address, mac->macaddr, ETH_ALEN);
 687
 688         new_mac_entry->state = mac->state;
 689         vpath->mac_addr_cnt++;
 690
 691         if (is_multicast_ether_addr(mac->macaddr))
 692                 vpath->mcast_addr_cnt++;
 693
 694         return TRUE;
 695 }
 696
 697 /* Add a mac address to DA table */
 698 static enum vxge_hw_status
 699 vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
 700 {
 701         enum vxge_hw_status status = VXGE_HW_OK;
 702         struct vxge_vpath *vpath;
 703         enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;
 704
 705         if (is_multicast_ether_addr(mac->macaddr))
 706                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
 707         else
 708                 duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;
 709
 710         vpath = &vdev->vpaths[mac->vpath_no];
 711         status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
 712                                                 mac->macmask, duplicate_mode);
 713         if (status != VXGE_HW_OK) {
 714                 vxge_debug_init(VXGE_ERR,
 715                         "DA config add entry failed for vpath:%d",
 716                         vpath->device_id);
 717         } else
 718                 if (FALSE == vxge_mac_list_add(vpath, mac))
 719                         status = -EPERM;
 720
 721         return status;
 722 }
 723
 724 static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
 725 {
 726         struct macInfo mac_info;
 727         u8 *mac_address = NULL;
 728         u64 mac_addr = 0, vpath_vector = 0;
 729         int vpath_idx = 0;
 730         enum vxge_hw_status status = VXGE_HW_OK;
 731         struct vxge_vpath *vpath = NULL;
 732
 733         mac_address = (u8 *)&mac_addr;
 734         memcpy(mac_address, mac_header, ETH_ALEN);
 735
 736         /* Is this mac address already in the list? */
 737         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 738                 vpath = &vdev->vpaths[vpath_idx];
 739                 if (vxge_search_mac_addr_in_list(vpath, mac_addr))
 740                         return vpath_idx;
 741         }
 742
 743         memset(&mac_info, 0, sizeof(struct macInfo));
 744         memcpy(mac_info.macaddr, mac_header, ETH_ALEN);
 745
 746         /* Any vpath has room to add mac address to its da table? */
 747         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
 748                 vpath = &vdev->vpaths[vpath_idx];
 749                 if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
 750                         /* Add this mac address to this vpath */
 751                         mac_info.vpath_no = vpath_idx;
 752                         mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
 753                         status = vxge_add_mac_addr(vdev, &mac_info);
 754                         if (status != VXGE_HW_OK)
 755                                 return -EPERM;
 756                         return vpath_idx;
 757                 }
 758         }
 759
 760         mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
 761         vpath_idx = 0;
 762         mac_info.vpath_no = vpath_idx;
 763         /* Is the first vpath already selected as catch-basin ? */
 764         vpath = &vdev->vpaths[vpath_idx];
 765         if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
 766                 /* Add this mac address to this vpath */
 767                 if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 768                         return -EPERM;
 769                 return vpath_idx;
 770         }
 771
 772         /* Select first vpath as catch-basin */
 773         vpath_vector = vxge_mBIT(vpath->device_id);
 774         status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
 775                                 vxge_hw_mgmt_reg_type_mrpcim,
 776                                 0,
 777                                 (ulong)offsetof(
 778                                         struct vxge_hw_mrpcim_reg,
 779                                         rts_mgr_cbasin_cfg),
 780                                 vpath_vector);
 781         if (status != VXGE_HW_OK) {
 782                 vxge_debug_tx(VXGE_ERR,
 783                         "%s: Unable to set the vpath-%d in catch-basin mode",
 784                         VXGE_DRIVER_NAME, vpath->device_id);
 785                 return -EPERM;
 786         }
 787
 788         if (FALSE == vxge_mac_list_add(vpath, &mac_info))
 789                 return -EPERM;
 790
 791         return vpath_idx;
 792 }
 793
 794 /**
 795  * vxge_xmit
 796  * @skb : the socket buffer containing the Tx data.
 797  * @dev : device pointer.
 798  *
 799  * This function is the Tx entry point of the driver. Neterion NIC supports
 800  * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
 801 */
 802 static netdev_tx_t
 803 vxge_xmit(struct sk_buff *skb, struct net_device *dev)
 804 {
 805         struct vxge_fifo *fifo = NULL;
 806         void *dtr_priv;
 807         void *dtr = NULL;
 808         struct vxgedev *vdev = NULL;
 809         enum vxge_hw_status status;
 810         int frg_cnt, first_frg_len;
 811         skb_frag_t *frag;
 812         int i = 0, j = 0, avail;
 813         u64 dma_pointer;
 814         struct vxge_tx_priv *txdl_priv = NULL;
 815         struct __vxge_hw_fifo *fifo_hw;
 816         int offload_type;
 817         int vpath_no = 0;
 818
 819         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
 820                         dev->name, __func__, __LINE__);
 821
 822         /* A buffer with no data will be dropped */
 823         if (unlikely(skb->len <= 0)) {
 824                 vxge_debug_tx(VXGE_ERR,
 825                         "%s: Buffer has no data..", dev->name);
 826                 dev_kfree_skb_any(skb);
 827                 return NETDEV_TX_OK;
 828         }
 829
 830         vdev = netdev_priv(dev);
 831
 832         if (unlikely(!is_vxge_card_up(vdev))) {
 833                 vxge_debug_tx(VXGE_ERR,
 834                         "%s: vdev not initialized", dev->name);
 835                 dev_kfree_skb_any(skb);
 836                 return NETDEV_TX_OK;
 837         }
 838
 839         if (vdev->config.addr_learn_en) {
 840                 vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
 841                 if (vpath_no == -EPERM) {
 842                         vxge_debug_tx(VXGE_ERR,
 843                                 "%s: Failed to store the mac address",
 844                                 dev->name);
 845                         dev_kfree_skb_any(skb);
 846                         return NETDEV_TX_OK;
 847                 }
 848         }
 849
 850         if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
 851                 vpath_no = skb_get_queue_mapping(skb);
 852         else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
 853                 vpath_no = vxge_get_vpath_no(vdev, skb);
 854
 855         vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);
 856
 857         if (vpath_no >= vdev->no_of_vpath)
 858                 vpath_no = 0;
 859
 860         fifo = &vdev->vpaths[vpath_no].fifo;
 861         fifo_hw = fifo->handle;
 862
 863         if (netif_tx_queue_stopped(fifo->txq))
 864                 return NETDEV_TX_BUSY;
 865
 866         avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
 867         if (avail == 0) {
 868                 vxge_debug_tx(VXGE_ERR,
 869                         "%s: No free TXDs available", dev->name);
 870                 fifo->stats.txd_not_free++;
 871                 goto _exit0;
 872         }
 873
 874         /* Last TXD?  Stop tx queue to avoid dropping packets.  TX
 875          * completion will resume the queue.
 876          */
 877         if (avail == 1)
 878                 netif_tx_stop_queue(fifo->txq);
 879
 880         status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
 881         if (unlikely(status != VXGE_HW_OK)) {
 882                 vxge_debug_tx(VXGE_ERR,
 883                    "%s: Out of descriptors .", dev->name);
 884                 fifo->stats.txd_out_of_desc++;
 885                 goto _exit0;
 886         }
 887
 888         vxge_debug_tx(VXGE_TRACE,
 889                 "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
 890                 dev->name, __func__, __LINE__,
 891                 fifo_hw, dtr, dtr_priv);
 892
 893         if (skb_vlan_tag_present(skb)) {
 894                 u16 vlan_tag = skb_vlan_tag_get(skb);
 895                 vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
 896         }
 897
 898         first_frg_len = skb_headlen(skb);
 899
 900         dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
 901                                 PCI_DMA_TODEVICE);
 902
 903         if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
 904                 vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 905                 fifo->stats.pci_map_fail++;
 906                 goto _exit0;
 907         }
 908
 909         txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
 910         txdl_priv->skb = skb;
 911         txdl_priv->dma_buffers[j] = dma_pointer;
 912
 913         frg_cnt = skb_shinfo(skb)->nr_frags;
 914         vxge_debug_tx(VXGE_TRACE,
 915                         "%s: %s:%d skb = %p txdl_priv = %p "
 916                         "frag_cnt = %d dma_pointer = 0x%llx", dev->name,
 917                         __func__, __LINE__, skb, txdl_priv,
 918                         frg_cnt, (unsigned long long)dma_pointer);
 919
 920         vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 921                 first_frg_len);
 922
 923         frag = &skb_shinfo(skb)->frags[0];
 924         for (i = 0; i < frg_cnt; i++) {
 925                 /* ignore 0 length fragment */
 926                 if (!skb_frag_size(frag))
 927                         continue;
 928
 929                 dma_pointer = (u64)skb_frag_dma_map(&fifo->pdev->dev, frag,
 930                                                     0, skb_frag_size(frag),
 931                                                     DMA_TO_DEVICE);
 932
 933                 if (unlikely(dma_mapping_error(&fifo->pdev->dev, dma_pointer)))
 934                         goto _exit2;
 935                 vxge_debug_tx(VXGE_TRACE,
 936                         "%s: %s:%d frag = %d dma_pointer = 0x%llx",
 937                                 dev->name, __func__, __LINE__, i,
 938                                 (unsigned long long)dma_pointer);
 939
 940                 txdl_priv->dma_buffers[j] = dma_pointer;
 941                 vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
 942                                         skb_frag_size(frag));
 943                 frag += 1;
 944         }
 945
 946         offload_type = vxge_offload_type(skb);
 947
 948         if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
 949                 int mss = vxge_tcp_mss(skb);
 950                 if (mss) {
 951                         vxge_debug_tx(VXGE_TRACE, "%s: %s:%d mss = %d",
 952                                 dev->name, __func__, __LINE__, mss);
 953                         vxge_hw_fifo_txdl_mss_set(dtr, mss);
 954                 } else {
 955                         vxge_assert(skb->len <=
 956                                 dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
 957                         vxge_assert(0);
 958                         goto _exit1;
 959                 }
 960         }
 961
 962         if (skb->ip_summed == CHECKSUM_PARTIAL)
 963                 vxge_hw_fifo_txdl_cksum_set_bits(dtr,
 964                                         VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
 965                                         VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
 966                                         VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
 967
 968         vxge_hw_fifo_txdl_post(fifo_hw, dtr);
 969
 970         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
 971                 dev->name, __func__, __LINE__);
 972         return NETDEV_TX_OK;
 973
 974 _exit2:
 975         vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
 976 _exit1:
 977         j = 0;
 978         frag = &skb_shinfo(skb)->frags[0];
 979
 980         pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
 981                         skb_headlen(skb), PCI_DMA_TODEVICE);
 982
 983         for (; j < i; j++) {
 984                 pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
 985                         skb_frag_size(frag), PCI_DMA_TODEVICE);
 986                 frag += 1;
 987         }
 988
 989         vxge_hw_fifo_txdl_free(fifo_hw, dtr);
 990 _exit0:
 991         netif_tx_stop_queue(fifo->txq);
 992         dev_kfree_skb_any(skb);
 993
 994         return NETDEV_TX_OK;
 995 }
 996
 997 /*
 998  * vxge_rx_term
 999  *
1000  * Function will be called by hw function to abort all outstanding receive
1001  * descriptors.
1002  */
1003 static void
1004 vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
1005 {
1006         struct vxge_ring *ring = (struct vxge_ring *)userdata;
1007         struct vxge_rx_priv *rx_priv =
1008                 vxge_hw_ring_rxd_private_get(dtrh);
1009
1010         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
1011                         ring->ndev->name, __func__, __LINE__);
1012         if (state != VXGE_HW_RXD_STATE_POSTED)
1013                 return;
1014
1015         pci_unmap_single(ring->pdev, rx_priv->data_dma,
1016                 rx_priv->data_size, PCI_DMA_FROMDEVICE);
1017
1018         dev_kfree_skb(rx_priv->skb);
1019         rx_priv->skb_data = NULL;
1020
1021         vxge_debug_entryexit(VXGE_TRACE,
1022                 "%s: %s:%d  Exiting...",
1023                 ring->ndev->name, __func__, __LINE__);
1024 }
1025
1026 /*
1027  * vxge_tx_term
1028  *
1029  * Function will be called to abort all outstanding tx descriptors
1030  */
1031 static void
1032 vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
1033 {
1034         struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
1035         skb_frag_t *frag;
1036         int i = 0, j, frg_cnt;
1037         struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
1038         struct sk_buff *skb = txd_priv->skb;
1039
1040         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1041
1042         if (state != VXGE_HW_TXDL_STATE_POSTED)
1043                 return;
1044
1045         /* check skb validity */
1046         vxge_assert(skb);
1047         frg_cnt = skb_shinfo(skb)->nr_frags;
1048         frag = &skb_shinfo(skb)->frags[0];
1049
1050         /*  for unfragmented skb */
1051         pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
1052                 skb_headlen(skb), PCI_DMA_TODEVICE);
1053
1054         for (j = 0; j < frg_cnt; j++) {
1055                 pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
1056                                skb_frag_size(frag), PCI_DMA_TODEVICE);
1057                 frag += 1;
1058         }
1059
1060         dev_kfree_skb(skb);
1061
1062         vxge_debug_entryexit(VXGE_TRACE,
1063                 "%s:%d  Exiting...", __func__, __LINE__);
1064 }
1065
1066 static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
1067 {
1068         struct list_head *entry, *next;
1069         u64 del_mac = 0;
1070         u8 *mac_address = (u8 *) (&del_mac);
1071
1072         /* Copy the mac address to delete from the list */
1073         memcpy(mac_address, mac->macaddr, ETH_ALEN);
1074
1075         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1076                 if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
1077                         list_del(entry);
1078                         kfree((struct vxge_mac_addrs *)entry);
1079                         vpath->mac_addr_cnt--;
1080
1081                         if (is_multicast_ether_addr(mac->macaddr))
1082                                 vpath->mcast_addr_cnt--;
1083                         return TRUE;
1084                 }
1085         }
1086
1087         return FALSE;
1088 }
1089
1090 /* delete a mac address from DA table */
1091 static enum vxge_hw_status
1092 vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
1093 {
1094         enum vxge_hw_status status = VXGE_HW_OK;
1095         struct vxge_vpath *vpath;
1096
1097         vpath = &vdev->vpaths[mac->vpath_no];
1098         status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
1099                                                 mac->macmask);
1100         if (status != VXGE_HW_OK) {
1101                 vxge_debug_init(VXGE_ERR,
1102                         "DA config delete entry failed for vpath:%d",
1103                         vpath->device_id);
1104         } else
1105                 vxge_mac_list_del(vpath, mac);
1106         return status;
1107 }
1108
1109 /**
1110  * vxge_set_multicast
1111  * @dev: pointer to the device structure
1112  *
1113  * Entry point for multicast address enable/disable
1114  * This function is a driver entry point which gets called by the kernel
1115  * whenever multicast addresses must be enabled/disabled. This also gets
1116  * called to set/reset promiscuous mode. Depending on the deivce flag, we
1117  * determine, if multicast address must be enabled or if promiscuous mode
1118  * is to be disabled etc.
1119  */
1120 static void vxge_set_multicast(struct net_device *dev)
1121 {
1122         struct netdev_hw_addr *ha;
1123         struct vxgedev *vdev;
1124         int i, mcast_cnt = 0;
1125         struct __vxge_hw_device *hldev;
1126         struct vxge_vpath *vpath;
1127         enum vxge_hw_status status = VXGE_HW_OK;
1128         struct macInfo mac_info;
1129         int vpath_idx = 0;
1130         struct vxge_mac_addrs *mac_entry;
1131         struct list_head *list_head;
1132         struct list_head *entry, *next;
1133         u8 *mac_address = NULL;
1134
1135         vxge_debug_entryexit(VXGE_TRACE,
1136                 "%s:%d", __func__, __LINE__);
1137
1138         vdev = netdev_priv(dev);
1139         hldev = vdev->devh;
1140
1141         if (unlikely(!is_vxge_card_up(vdev)))
1142                 return;
1143
1144         if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
1145                 for (i = 0; i < vdev->no_of_vpath; i++) {
1146                         vpath = &vdev->vpaths[i];
1147                         vxge_assert(vpath->is_open);
1148                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1149                         if (status != VXGE_HW_OK)
1150                                 vxge_debug_init(VXGE_ERR, "failed to enable "
1151                                                 "multicast, status %d", status);
1152                         vdev->all_multi_flg = 1;
1153                 }
1154         } else if (!(dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1155                 for (i = 0; i < vdev->no_of_vpath; i++) {
1156                         vpath = &vdev->vpaths[i];
1157                         vxge_assert(vpath->is_open);
1158                         status = vxge_hw_vpath_mcast_disable(vpath->handle);
1159                         if (status != VXGE_HW_OK)
1160                                 vxge_debug_init(VXGE_ERR, "failed to disable "
1161                                                 "multicast, status %d", status);
1162                         vdev->all_multi_flg = 0;
1163                 }
1164         }
1165
1166
1167         if (!vdev->config.addr_learn_en) {
1168                 for (i = 0; i < vdev->no_of_vpath; i++) {
1169                         vpath = &vdev->vpaths[i];
1170                         vxge_assert(vpath->is_open);
1171
1172                         if (dev->flags & IFF_PROMISC)
1173                                 status = vxge_hw_vpath_promisc_enable(
1174                                         vpath->handle);
1175                         else
1176                                 status = vxge_hw_vpath_promisc_disable(
1177                                         vpath->handle);
1178                         if (status != VXGE_HW_OK)
1179                                 vxge_debug_init(VXGE_ERR, "failed to %s promisc"
1180                                         ", status %d", dev->flags&IFF_PROMISC ?
1181                                         "enable" : "disable", status);
1182                 }
1183         }
1184
1185         memset(&mac_info, 0, sizeof(struct macInfo));
1186         /* Update individual M_CAST address list */
1187         if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) {
1188                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1189                 list_head = &vdev->vpaths[0].mac_addr_list;
1190                 if ((netdev_mc_count(dev) +
1191                         (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
1192                                 vdev->vpaths[0].max_mac_addr_cnt)
1193                         goto _set_all_mcast;
1194
1195                 /* Delete previous MC's */
1196                 for (i = 0; i < mcast_cnt; i++) {
1197                         list_for_each_safe(entry, next, list_head) {
1198                                 mac_entry = (struct vxge_mac_addrs *)entry;
1199                                 /* Copy the mac address to delete */
1200                                 mac_address = (u8 *)&mac_entry->macaddr;
1201                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1202
1203                                 if (is_multicast_ether_addr(mac_info.macaddr)) {
1204                                         for (vpath_idx = 0; vpath_idx <
1205                                                 vdev->no_of_vpath;
1206                                                 vpath_idx++) {
1207                                                 mac_info.vpath_no = vpath_idx;
1208                                                 status = vxge_del_mac_addr(
1209                                                                 vdev,
1210                                                                 &mac_info);
1211                                         }
1212                                 }
1213                         }
1214                 }
1215
1216                 /* Add new ones */
1217                 netdev_for_each_mc_addr(ha, dev) {
1218                         memcpy(mac_info.macaddr, ha->addr, ETH_ALEN);
1219                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1220                                         vpath_idx++) {
1221                                 mac_info.vpath_no = vpath_idx;
1222                                 mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1223                                 status = vxge_add_mac_addr(vdev, &mac_info);
1224                                 if (status != VXGE_HW_OK) {
1225                                         vxge_debug_init(VXGE_ERR,
1226                                                 "%s:%d Setting individual"
1227                                                 "multicast address failed",
1228                                                 __func__, __LINE__);
1229                                         goto _set_all_mcast;
1230                                 }
1231                         }
1232                 }
1233
1234                 return;
1235 _set_all_mcast:
1236                 mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
1237                 /* Delete previous MC's */
1238                 for (i = 0; i < mcast_cnt; i++) {
1239                         list_for_each_safe(entry, next, list_head) {
1240                                 mac_entry = (struct vxge_mac_addrs *)entry;
1241                                 /* Copy the mac address to delete */
1242                                 mac_address = (u8 *)&mac_entry->macaddr;
1243                                 memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1244
1245                                 if (is_multicast_ether_addr(mac_info.macaddr))
1246                                         break;
1247                         }
1248
1249                         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
1250                                         vpath_idx++) {
1251                                 mac_info.vpath_no = vpath_idx;
1252                                 status = vxge_del_mac_addr(vdev, &mac_info);
1253                         }
1254                 }
1255
1256                 /* Enable all multicast */
1257                 for (i = 0; i < vdev->no_of_vpath; i++) {
1258                         vpath = &vdev->vpaths[i];
1259                         vxge_assert(vpath->is_open);
1260
1261                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
1262                         if (status != VXGE_HW_OK) {
1263                                 vxge_debug_init(VXGE_ERR,
1264                                         "%s:%d Enabling all multicasts failed",
1265                                          __func__, __LINE__);
1266                         }
1267                         vdev->all_multi_flg = 1;
1268                 }
1269                 dev->flags |= IFF_ALLMULTI;
1270         }
1271
1272         vxge_debug_entryexit(VXGE_TRACE,
1273                 "%s:%d  Exiting...", __func__, __LINE__);
1274 }
1275
1276 /**
1277  * vxge_set_mac_addr
1278  * @dev: pointer to the device structure
1279  *
1280  * Update entry "0" (default MAC addr)
1281  */
1282 static int vxge_set_mac_addr(struct net_device *dev, void *p)
1283 {
1284         struct sockaddr *addr = p;
1285         struct vxgedev *vdev;
1286         struct __vxge_hw_device *hldev;
1287         enum vxge_hw_status status = VXGE_HW_OK;
1288         struct macInfo mac_info_new, mac_info_old;
1289         int vpath_idx = 0;
1290
1291         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1292
1293         vdev = netdev_priv(dev);
1294         hldev = vdev->devh;
1295
1296         if (!is_valid_ether_addr(addr->sa_data))
1297                 return -EINVAL;
1298
1299         memset(&mac_info_new, 0, sizeof(struct macInfo));
1300         memset(&mac_info_old, 0, sizeof(struct macInfo));
1301
1302         vxge_debug_entryexit(VXGE_TRACE, "%s:%d  Exiting...",
1303                 __func__, __LINE__);
1304
1305         /* Get the old address */
1306         memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);
1307
1308         /* Copy the new address */
1309         memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);
1310
1311         /* First delete the old mac address from all the vpaths
1312         as we can't specify the index while adding new mac address */
1313         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1314                 struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
1315                 if (!vpath->is_open) {
1316                         /* This can happen when this interface is added/removed
1317                         to the bonding interface. Delete this station address
1318                         from the linked list */
1319                         vxge_mac_list_del(vpath, &mac_info_old);
1320
1321                         /* Add this new address to the linked list
1322                         for later restoring */
1323                         vxge_mac_list_add(vpath, &mac_info_new);
1324
1325                         continue;
1326                 }
1327                 /* Delete the station address */
1328                 mac_info_old.vpath_no = vpath_idx;
1329                 status = vxge_del_mac_addr(vdev, &mac_info_old);
1330         }
1331
1332         if (unlikely(!is_vxge_card_up(vdev))) {
1333                 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1334                 return VXGE_HW_OK;
1335         }
1336
1337         /* Set this mac address to all the vpaths */
1338         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
1339                 mac_info_new.vpath_no = vpath_idx;
1340                 mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1341                 status = vxge_add_mac_addr(vdev, &mac_info_new);
1342                 if (status != VXGE_HW_OK)
1343                         return -EINVAL;
1344         }
1345
1346         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1347
1348         return status;
1349 }
1350
1351 /*
1352  * vxge_vpath_intr_enable
1353  * @vdev: pointer to vdev
1354  * @vp_id: vpath for which to enable the interrupts
1355  *
1356  * Enables the interrupts for the vpath
1357 */
1358 static void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1359 {
1360         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1361         int msix_id = 0;
1362         int tim_msix_id[4] = {0, 1, 0, 0};
1363         int alarm_msix_id = VXGE_ALARM_MSIX_ID;
1364
1365         vxge_hw_vpath_intr_enable(vpath->handle);
1366
1367         if (vdev->config.intr_type == INTA)
1368                 vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
1369         else {
1370                 vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
1371                         alarm_msix_id);
1372
1373                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1374                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1375                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);
1376
1377                 /* enable the alarm vector */
1378                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1379                         VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id;
1380                 vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1381         }
1382 }
1383
1384 /*
1385  * vxge_vpath_intr_disable
1386  * @vdev: pointer to vdev
1387  * @vp_id: vpath for which to disable the interrupts
1388  *
1389  * Disables the interrupts for the vpath
1390 */
1391 static void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1392 {
1393         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1394         struct __vxge_hw_device *hldev;
1395         int msix_id;
1396
1397         hldev = pci_get_drvdata(vdev->pdev);
1398
1399         vxge_hw_vpath_wait_receive_idle(hldev, vpath->device_id);
1400
1401         vxge_hw_vpath_intr_disable(vpath->handle);
1402
1403         if (vdev->config.intr_type == INTA)
1404                 vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
1405         else {
1406                 msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1407                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1408                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);
1409
1410                 /* disable the alarm vector */
1411                 msix_id = (vpath->handle->vpath->hldev->first_vp_id *
1412                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
1413                 vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
1414         }
1415 }
1416
1417 /* list all mac addresses from DA table */
1418 static enum vxge_hw_status
1419 vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath, struct macInfo *mac)
1420 {
1421         enum vxge_hw_status status = VXGE_HW_OK;
1422         unsigned char macmask[ETH_ALEN];
1423         unsigned char macaddr[ETH_ALEN];
1424
1425         status = vxge_hw_vpath_mac_addr_get(vpath->handle,
1426                                 macaddr, macmask);
1427         if (status != VXGE_HW_OK) {
1428                 vxge_debug_init(VXGE_ERR,
1429                         "DA config list entry failed for vpath:%d",
1430                         vpath->device_id);
1431                 return status;
1432         }
1433
1434         while (!ether_addr_equal(mac->macaddr, macaddr)) {
1435                 status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
1436                                 macaddr, macmask);
1437                 if (status != VXGE_HW_OK)
1438                         break;
1439         }
1440
1441         return status;
1442 }
1443
1444 /* Store all mac addresses from the list to the DA table */
1445 static enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
1446 {
1447         enum vxge_hw_status status = VXGE_HW_OK;
1448         struct macInfo mac_info;
1449         u8 *mac_address = NULL;
1450         struct list_head *entry, *next;
1451
1452         memset(&mac_info, 0, sizeof(struct macInfo));
1453
1454         if (vpath->is_open) {
1455                 list_for_each_safe(entry, next, &vpath->mac_addr_list) {
1456                         mac_address =
1457                                 (u8 *)&
1458                                 ((struct vxge_mac_addrs *)entry)->macaddr;
1459                         memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
1460                         ((struct vxge_mac_addrs *)entry)->state =
1461                                 VXGE_LL_MAC_ADDR_IN_DA_TABLE;
1462                         /* does this mac address already exist in da table? */
1463                         status = vxge_search_mac_addr_in_da_table(vpath,
1464                                 &mac_info);
1465                         if (status != VXGE_HW_OK) {
1466                                 /* Add this mac address to the DA table */
1467                                 status = vxge_hw_vpath_mac_addr_add(
1468                                         vpath->handle, mac_info.macaddr,
1469                                         mac_info.macmask,
1470                                     VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
1471                                 if (status != VXGE_HW_OK) {
1472                                         vxge_debug_init(VXGE_ERR,
1473                                             "DA add entry failed for vpath:%d",
1474                                             vpath->device_id);
1475                                         ((struct vxge_mac_addrs *)entry)->state
1476                                                 = VXGE_LL_MAC_ADDR_IN_LIST;
1477                                 }
1478                         }
1479                 }
1480         }
1481
1482         return status;
1483 }
1484
1485 /* Store all vlan ids from the list to the vid table */
1486 static enum vxge_hw_status
1487 vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
1488 {
1489         enum vxge_hw_status status = VXGE_HW_OK;
1490         struct vxgedev *vdev = vpath->vdev;
1491         u16 vid;
1492
1493         if (!vpath->is_open)
1494                 return status;
1495
1496         for_each_set_bit(vid, vdev->active_vlans, VLAN_N_VID)
1497                 status = vxge_hw_vpath_vid_add(vpath->handle, vid);
1498
1499         return status;
1500 }
1501
1502 /*
1503  * vxge_reset_vpath
1504  * @vdev: pointer to vdev
1505  * @vp_id: vpath to reset
1506  *
1507  * Resets the vpath
1508 */
1509 static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
1510 {
1511         enum vxge_hw_status status = VXGE_HW_OK;
1512         struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1513         int ret = 0;
1514
1515         /* check if device is down already */
1516         if (unlikely(!is_vxge_card_up(vdev)))
1517                 return 0;
1518
1519         /* is device reset already scheduled */
1520         if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1521                 return 0;
1522
1523         if (vpath->handle) {
1524                 if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1525                         if (is_vxge_card_up(vdev) &&
1526                                 vxge_hw_vpath_recover_from_reset(vpath->handle)
1527                                         != VXGE_HW_OK) {
1528                                 vxge_debug_init(VXGE_ERR,
1529                                         "vxge_hw_vpath_recover_from_reset"
1530                                         "failed for vpath:%d", vp_id);
1531                                 return status;
1532                         }
1533                 } else {
1534                         vxge_debug_init(VXGE_ERR,
1535                                 "vxge_hw_vpath_reset failed for"
1536                                 "vpath:%d", vp_id);
1537                                 return status;
1538                 }
1539         } else
1540                 return VXGE_HW_FAIL;
1541
1542         vxge_restore_vpath_mac_addr(vpath);
1543         vxge_restore_vpath_vid_table(vpath);
1544
1545         /* Enable all broadcast */
1546         vxge_hw_vpath_bcast_enable(vpath->handle);
1547
1548         /* Enable all multicast */
1549         if (vdev->all_multi_flg) {
1550                 status = vxge_hw_vpath_mcast_enable(vpath->handle);
1551                 if (status != VXGE_HW_OK)
1552                         vxge_debug_init(VXGE_ERR,
1553                                 "%s:%d Enabling multicast failed",
1554                                 __func__, __LINE__);
1555         }
1556
1557         /* Enable the interrupts */
1558         vxge_vpath_intr_enable(vdev, vp_id);
1559
1560         smp_wmb();
1561
1562         /* Enable the flow of traffic through the vpath */
1563         vxge_hw_vpath_enable(vpath->handle);
1564
1565         smp_wmb();
1566         vxge_hw_vpath_rx_doorbell_init(vpath->handle);
1567         vpath->ring.last_status = VXGE_HW_OK;
1568
1569         /* Vpath reset done */
1570         clear_bit(vp_id, &vdev->vp_reset);
1571
1572         /* Start the vpath queue */
1573         if (netif_tx_queue_stopped(vpath->fifo.txq))
1574                 netif_tx_wake_queue(vpath->fifo.txq);
1575
1576         return ret;
1577 }
1578
1579 /* Configure CI */
1580 static void vxge_config_ci_for_tti_rti(struct vxgedev *vdev)
1581 {
1582         int i = 0;
1583
1584         /* Enable CI for RTI */
1585         if (vdev->config.intr_type == MSI_X) {
1586                 for (i = 0; i < vdev->no_of_vpath; i++) {
1587                         struct __vxge_hw_ring *hw_ring;
1588
1589                         hw_ring = vdev->vpaths[i].ring.handle;
1590                         vxge_hw_vpath_dynamic_rti_ci_set(hw_ring);
1591                 }
1592         }
1593
1594         /* Enable CI for TTI */
1595         for (i = 0; i < vdev->no_of_vpath; i++) {
1596                 struct __vxge_hw_fifo *hw_fifo = vdev->vpaths[i].fifo.handle;
1597                 vxge_hw_vpath_tti_ci_set(hw_fifo);
1598                 /*
1599                  * For Inta (with or without napi), Set CI ON for only one
1600                  * vpath. (Have only one free running timer).
1601                  */
1602                 if ((vdev->config.intr_type == INTA) && (i == 0))
1603                         break;
1604         }
1605
1606         return;
1607 }
1608
1609 static int do_vxge_reset(struct vxgedev *vdev, int event)
1610 {
1611         enum vxge_hw_status status;
1612         int ret = 0, vp_id, i;
1613
1614         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1615
1616         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
1617                 /* check if device is down already */
1618                 if (unlikely(!is_vxge_card_up(vdev)))
1619                         return 0;
1620
1621                 /* is reset already scheduled */
1622                 if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
1623                         return 0;
1624         }
1625
1626         if (event == VXGE_LL_FULL_RESET) {
1627                 netif_carrier_off(vdev->ndev);
1628
1629                 /* wait for all the vpath reset to complete */
1630                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1631                         while (test_bit(vp_id, &vdev->vp_reset))
1632                                 msleep(50);
1633                 }
1634
1635                 netif_carrier_on(vdev->ndev);
1636
1637                 /* if execution mode is set to debug, don't reset the adapter */
1638                 if (unlikely(vdev->exec_mode)) {
1639                         vxge_debug_init(VXGE_ERR,
1640                                 "%s: execution mode is debug, returning..",
1641                                 vdev->ndev->name);
1642                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1643                         netif_tx_stop_all_queues(vdev->ndev);
1644                         return 0;
1645                 }
1646         }
1647
1648         if (event == VXGE_LL_FULL_RESET) {
1649                 vxge_hw_device_wait_receive_idle(vdev->devh);
1650                 vxge_hw_device_intr_disable(vdev->devh);
1651
1652                 switch (vdev->cric_err_event) {
1653                 case VXGE_HW_EVENT_UNKNOWN:
1654                         netif_tx_stop_all_queues(vdev->ndev);
1655                         vxge_debug_init(VXGE_ERR,
1656                                 "fatal: %s: Disabling device due to"
1657                                 "unknown error",
1658                                 vdev->ndev->name);
1659                         ret = -EPERM;
1660                         goto out;
1661                 case VXGE_HW_EVENT_RESET_START:
1662                         break;
1663                 case VXGE_HW_EVENT_RESET_COMPLETE:
1664                 case VXGE_HW_EVENT_LINK_DOWN:
1665                 case VXGE_HW_EVENT_LINK_UP:
1666                 case VXGE_HW_EVENT_ALARM_CLEARED:
1667                 case VXGE_HW_EVENT_ECCERR:
1668                 case VXGE_HW_EVENT_MRPCIM_ECCERR:
1669                         ret = -EPERM;
1670                         goto out;
1671                 case VXGE_HW_EVENT_FIFO_ERR:
1672                 case VXGE_HW_EVENT_VPATH_ERR:
1673                         break;
1674                 case VXGE_HW_EVENT_CRITICAL_ERR:
1675                         netif_tx_stop_all_queues(vdev->ndev);
1676                         vxge_debug_init(VXGE_ERR,
1677                                 "fatal: %s: Disabling device due to"
1678                                 "serious error",
1679                                 vdev->ndev->name);
1680                         /* SOP or device reset required */
1681                         /* This event is not currently used */
1682                         ret = -EPERM;
1683                         goto out;
1684                 case VXGE_HW_EVENT_SERR:
1685                         netif_tx_stop_all_queues(vdev->ndev);
1686                         vxge_debug_init(VXGE_ERR,
1687                                 "fatal: %s: Disabling device due to"
1688                                 "serious error",
1689                                 vdev->ndev->name);
1690                         ret = -EPERM;
1691                         goto out;
1692                 case VXGE_HW_EVENT_SRPCIM_SERR:
1693                 case VXGE_HW_EVENT_MRPCIM_SERR:
1694                         ret = -EPERM;
1695                         goto out;
1696                 case VXGE_HW_EVENT_SLOT_FREEZE:
1697                         netif_tx_stop_all_queues(vdev->ndev);
1698                         vxge_debug_init(VXGE_ERR,
1699                                 "fatal: %s: Disabling device due to"
1700                                 "slot freeze",
1701                                 vdev->ndev->name);
1702                         ret = -EPERM;
1703                         goto out;
1704                 default:
1705                         break;
1706
1707                 }
1708         }
1709
1710         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
1711                 netif_tx_stop_all_queues(vdev->ndev);
1712
1713         if (event == VXGE_LL_FULL_RESET) {
1714                 status = vxge_reset_all_vpaths(vdev);
1715                 if (status != VXGE_HW_OK) {
1716                         vxge_debug_init(VXGE_ERR,
1717                                 "fatal: %s: can not reset vpaths",
1718                                 vdev->ndev->name);
1719                         ret = -EPERM;
1720                         goto out;
1721                 }
1722         }
1723
1724         if (event == VXGE_LL_COMPL_RESET) {
1725                 for (i = 0; i < vdev->no_of_vpath; i++)
1726                         if (vdev->vpaths[i].handle) {
1727                                 if (vxge_hw_vpath_recover_from_reset(
1728                                         vdev->vpaths[i].handle)
1729                                                 != VXGE_HW_OK) {
1730                                         vxge_debug_init(VXGE_ERR,
1731                                                 "vxge_hw_vpath_recover_"
1732                                                 "from_reset failed for vpath: "
1733                                                 "%d", i);
1734                                         ret = -EPERM;
1735                                         goto out;
1736                                 }
1737                                 } else {
1738                                         vxge_debug_init(VXGE_ERR,
1739                                         "vxge_hw_vpath_reset failed for "
1740                                                 "vpath:%d", i);
1741                                         ret = -EPERM;
1742                                         goto out;
1743                                 }
1744         }
1745
1746         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
1747                 /* Reprogram the DA table with populated mac addresses */
1748                 for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
1749                         vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
1750                         vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
1751                 }
1752
1753                 /* enable vpath interrupts */
1754                 for (i = 0; i < vdev->no_of_vpath; i++)
1755                         vxge_vpath_intr_enable(vdev, i);
1756
1757                 vxge_hw_device_intr_enable(vdev->devh);
1758
1759                 smp_wmb();
1760
1761                 /* Indicate card up */
1762                 set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
1763
1764                 /* Get the traffic to flow through the vpaths */
1765                 for (i = 0; i < vdev->no_of_vpath; i++) {
1766                         vxge_hw_vpath_enable(vdev->vpaths[i].handle);
1767                         smp_wmb();
1768                         vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
1769                 }
1770
1771                 netif_tx_wake_all_queues(vdev->ndev);
1772         }
1773
1774         /* configure CI */
1775         vxge_config_ci_for_tti_rti(vdev);
1776
1777 out:
1778         vxge_debug_entryexit(VXGE_TRACE,
1779                 "%s:%d  Exiting...", __func__, __LINE__);
1780
1781         /* Indicate reset done */
1782         if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
1783                 clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
1784         return ret;
1785 }
1786
1787 /*
1788  * vxge_reset
1789  * @vdev: pointer to ll device
1790  *
1791  * driver may reset the chip on events of serr, eccerr, etc
1792  */
1793 static void vxge_reset(struct work_struct *work)
1794 {
1795         struct vxgedev *vdev = container_of(work, struct vxgedev, reset_task);
1796
1797         if (!netif_running(vdev->ndev))
1798                 return;
1799
1800         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1801 }
1802
1803 /**
1804  * vxge_poll - Receive handler when Receive Polling is used.
1805  * @dev: pointer to the device structure.
1806  * @budget: Number of packets budgeted to be processed in this iteration.
1807  *
1808  * This function comes into picture only if Receive side is being handled
1809  * through polling (called NAPI in linux). It mostly does what the normal
1810  * Rx interrupt handler does in terms of descriptor and packet processing
1811  * but not in an interrupt context. Also it will process a specified number
1812  * of packets at most in one iteration. This value is passed down by the
1813  * kernel as the function argument 'budget'.
1814  */
1815 static int vxge_poll_msix(struct napi_struct *napi, int budget)
1816 {
1817         struct vxge_ring *ring = container_of(napi, struct vxge_ring, napi);
1818         int pkts_processed;
1819         int budget_org = budget;
1820
1821         ring->budget = budget;
1822         ring->pkts_processed = 0;
1823         vxge_hw_vpath_poll_rx(ring->handle);
1824         pkts_processed = ring->pkts_processed;
1825
1826         if (pkts_processed < budget_org) {
1827                 napi_complete_done(napi, pkts_processed);
1828
1829                 /* Re enable the Rx interrupts for the vpath */
1830                 vxge_hw_channel_msix_unmask(
1831                                 (struct __vxge_hw_channel *)ring->handle,
1832                                 ring->rx_vector_no);
1833                 mmiowb();
1834         }
1835
1836         /* We are copying and returning the local variable, in case if after
1837          * clearing the msix interrupt above, if the interrupt fires right
1838          * away which can preempt this NAPI thread */
1839         return pkts_processed;
1840 }
1841
1842 static int vxge_poll_inta(struct napi_struct *napi, int budget)
1843 {
1844         struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
1845         int pkts_processed = 0;
1846         int i;
1847         int budget_org = budget;
1848         struct vxge_ring *ring;
1849
1850         struct __vxge_hw_device *hldev = pci_get_drvdata(vdev->pdev);
1851
1852         for (i = 0; i < vdev->no_of_vpath; i++) {
1853                 ring = &vdev->vpaths[i].ring;
1854                 ring->budget = budget;
1855                 ring->pkts_processed = 0;
1856                 vxge_hw_vpath_poll_rx(ring->handle);
1857                 pkts_processed += ring->pkts_processed;
1858                 budget -= ring->pkts_processed;
1859                 if (budget <= 0)
1860                         break;
1861         }
1862
1863         VXGE_COMPLETE_ALL_TX(vdev);
1864
1865         if (pkts_processed < budget_org) {
1866                 napi_complete_done(napi, pkts_processed);
1867                 /* Re enable the Rx interrupts for the ring */
1868                 vxge_hw_device_unmask_all(hldev);
1869                 vxge_hw_device_flush_io(hldev);
1870         }
1871
1872         return pkts_processed;
1873 }
1874
1875 #ifdef CONFIG_NET_POLL_CONTROLLER
1876 /**
1877  * vxge_netpoll - netpoll event handler entry point
1878  * @dev : pointer to the device structure.
1879  * Description:
1880  *      This function will be called by upper layer to check for events on the
1881  * interface in situations where interrupts are disabled. It is used for
1882  * specific in-kernel networking tasks, such as remote consoles and kernel
1883  * debugging over the network (example netdump in RedHat).
1884  */
1885 static void vxge_netpoll(struct net_device *dev)
1886 {
1887         struct vxgedev *vdev = netdev_priv(dev);
1888         struct pci_dev *pdev = vdev->pdev;
1889         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
1890         const int irq = pdev->irq;
1891
1892         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
1893
1894         if (pci_channel_offline(pdev))
1895                 return;
1896
1897         disable_irq(irq);
1898         vxge_hw_device_clear_tx_rx(hldev);
1899
1900         vxge_hw_device_clear_tx_rx(hldev);
1901         VXGE_COMPLETE_ALL_RX(vdev);
1902         VXGE_COMPLETE_ALL_TX(vdev);
1903
1904         enable_irq(irq);
1905
1906         vxge_debug_entryexit(VXGE_TRACE,
1907                 "%s:%d  Exiting...", __func__, __LINE__);
1908 }
1909 #endif
1910
1911 /* RTH configuration */
1912 static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
1913 {
1914         enum vxge_hw_status status = VXGE_HW_OK;
1915         struct vxge_hw_rth_hash_types hash_types;
1916         u8 itable[256] = {0}; /* indirection table */
1917         u8 mtable[256] = {0}; /* CPU to vpath mapping  */
1918         int index;
1919
1920         /*
1921          * Filling
1922          *      - itable with bucket numbers
1923          *      - mtable with bucket-to-vpath mapping
1924          */
1925         for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
1926                 itable[index] = index;
1927                 mtable[index] = index % vdev->no_of_vpath;
1928         }
1929
1930         /* set indirection table, bucket-to-vpath mapping */
1931         status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
1932                                                 vdev->no_of_vpath,
1933                                                 mtable, itable,
1934                                                 vdev->config.rth_bkt_sz);
1935         if (status != VXGE_HW_OK) {
1936                 vxge_debug_init(VXGE_ERR,
1937                         "RTH indirection table configuration failed "
1938                         "for vpath:%d", vdev->vpaths[0].device_id);
1939                 return status;
1940         }
1941
1942         /* Fill RTH hash types */
1943         hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
1944         hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
1945         hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
1946         hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
1947         hash_types.hash_type_tcpipv6ex_en =
1948                                         vdev->config.rth_hash_type_tcpipv6ex;
1949         hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;
1950
1951         /*
1952          * Because the itable_set() method uses the active_table field
1953          * for the target virtual path the RTH config should be updated
1954          * for all VPATHs. The h/w only uses the lowest numbered VPATH
1955          * when steering frames.
1956          */
1957          for (index = 0; index < vdev->no_of_vpath; index++) {
1958                 status = vxge_hw_vpath_rts_rth_set(
1959                                 vdev->vpaths[index].handle,
1960                                 vdev->config.rth_algorithm,
1961                                 &hash_types,
1962                                 vdev->config.rth_bkt_sz);
1963                  if (status != VXGE_HW_OK) {
1964                         vxge_debug_init(VXGE_ERR,
1965                                 "RTH configuration failed for vpath:%d",
1966                                 vdev->vpaths[index].device_id);
1967                         return status;
1968                  }
1969          }
1970
1971         return status;
1972 }
1973
1974 /* reset vpaths */
1975 static enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
1976 {
1977         enum vxge_hw_status status = VXGE_HW_OK;
1978         struct vxge_vpath *vpath;
1979         int i;
1980
1981         for (i = 0; i < vdev->no_of_vpath; i++) {
1982                 vpath = &vdev->vpaths[i];
1983                 if (vpath->handle) {
1984                         if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1985                                 if (is_vxge_card_up(vdev) &&
1986                                         vxge_hw_vpath_recover_from_reset(
1987                                                 vpath->handle) != VXGE_HW_OK) {
1988                                         vxge_debug_init(VXGE_ERR,
1989                                                 "vxge_hw_vpath_recover_"
1990                                                 "from_reset failed for vpath: "
1991                                                 "%d", i);
1992                                         return status;
1993                                 }
1994                         } else {
1995                                 vxge_debug_init(VXGE_ERR,
1996                                         "vxge_hw_vpath_reset failed for "
1997                                         "vpath:%d", i);
1998                                         return status;
1999                         }
2000                 }
2001         }
2002
2003         return status;
2004 }
2005
2006 /* close vpaths */
2007 static void vxge_close_vpaths(struct vxgedev *vdev, int index)
2008 {
2009         struct vxge_vpath *vpath;
2010         int i;
2011
2012         for (i = index; i < vdev->no_of_vpath; i++) {
2013                 vpath = &vdev->vpaths[i];
2014
2015                 if (vpath->handle && vpath->is_open) {
2016                         vxge_hw_vpath_close(vpath->handle);
2017                         vdev->stats.vpaths_open--;
2018                 }
2019                 vpath->is_open = 0;
2020                 vpath->handle = NULL;
2021         }
2022 }
2023
2024 /* open vpaths */
2025 static int vxge_open_vpaths(struct vxgedev *vdev)
2026 {
2027         struct vxge_hw_vpath_attr attr;
2028         enum vxge_hw_status status;
2029         struct vxge_vpath *vpath;
2030         u32 vp_id = 0;
2031         int i;
2032
2033         for (i = 0; i < vdev->no_of_vpath; i++) {
2034                 vpath = &vdev->vpaths[i];
2035                 vxge_assert(vpath->is_configured);
2036
2037                 if (!vdev->titan1) {
2038                         struct vxge_hw_vp_config *vcfg;
2039                         vcfg = &vdev->devh->config.vp_config[vpath->device_id];
2040
2041                         vcfg->rti.urange_a = RTI_T1A_RX_URANGE_A;
2042                         vcfg->rti.urange_b = RTI_T1A_RX_URANGE_B;
2043                         vcfg->rti.urange_c = RTI_T1A_RX_URANGE_C;
2044                         vcfg->tti.uec_a = TTI_T1A_TX_UFC_A;
2045                         vcfg->tti.uec_b = TTI_T1A_TX_UFC_B;
2046                         vcfg->tti.uec_c = TTI_T1A_TX_UFC_C(vdev->mtu);
2047                         vcfg->tti.uec_d = TTI_T1A_TX_UFC_D(vdev->mtu);
2048                         vcfg->tti.ltimer_val = VXGE_T1A_TTI_LTIMER_VAL;
2049                         vcfg->tti.rtimer_val = VXGE_T1A_TTI_RTIMER_VAL;
2050                 }
2051
2052                 attr.vp_id = vpath->device_id;
2053                 attr.fifo_attr.callback = vxge_xmit_compl;
2054                 attr.fifo_attr.txdl_term = vxge_tx_term;
2055                 attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
2056                 attr.fifo_attr.userdata = &vpath->fifo;
2057
2058                 attr.ring_attr.callback = vxge_rx_1b_compl;
2059                 attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
2060                 attr.ring_attr.rxd_term = vxge_rx_term;
2061                 attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
2062                 attr.ring_attr.userdata = &vpath->ring;
2063
2064                 vpath->ring.ndev = vdev->ndev;
2065                 vpath->ring.pdev = vdev->pdev;
2066
2067                 status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle);
2068                 if (status == VXGE_HW_OK) {
2069                         vpath->fifo.handle =
2070                             (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
2071                         vpath->ring.handle =
2072                             (struct __vxge_hw_ring *)attr.ring_attr.userdata;
2073                         vpath->fifo.tx_steering_type =
2074                                 vdev->config.tx_steering_type;
2075                         vpath->fifo.ndev = vdev->ndev;
2076                         vpath->fifo.pdev = vdev->pdev;
2077
2078                         u64_stats_init(&vpath->fifo.stats.syncp);
2079                         u64_stats_init(&vpath->ring.stats.syncp);
2080
2081                         if (vdev->config.tx_steering_type)
2082                                 vpath->fifo.txq =
2083                                         netdev_get_tx_queue(vdev->ndev, i);
2084                         else
2085                                 vpath->fifo.txq =
2086                                         netdev_get_tx_queue(vdev->ndev, 0);
2087                         vpath->fifo.indicate_max_pkts =
2088                                 vdev->config.fifo_indicate_max_pkts;
2089                         vpath->fifo.tx_vector_no = 0;
2090                         vpath->ring.rx_vector_no = 0;
2091                         vpath->ring.rx_hwts = vdev->rx_hwts;
2092                         vpath->is_open = 1;
2093                         vdev->vp_handles[i] = vpath->handle;
2094                         vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip;
2095                         vdev->stats.vpaths_open++;
2096                 } else {
2097                         vdev->stats.vpath_open_fail++;
2098                         vxge_debug_init(VXGE_ERR, "%s: vpath: %d failed to "
2099                                         "open with status: %d",
2100                                         vdev->ndev->name, vpath->device_id,
2101                                         status);
2102                         vxge_close_vpaths(vdev, 0);
2103                         return -EPERM;
2104                 }
2105
2106                 vp_id = vpath->handle->vpath->vp_id;
2107                 vdev->vpaths_deployed |= vxge_mBIT(vp_id);
2108         }
2109
2110         return VXGE_HW_OK;
2111 }
2112
2113 /**
2114  *  adaptive_coalesce_tx_interrupts - Changes the interrupt coalescing
2115  *  if the interrupts are not within a range
2116  *  @fifo: pointer to transmit fifo structure
2117  *  Description: The function changes boundary timer and restriction timer
2118  *  value depends on the traffic
2119  *  Return Value: None
2120  */
2121 static void adaptive_coalesce_tx_interrupts(struct vxge_fifo *fifo)
2122 {
2123         fifo->interrupt_count++;
2124         if (time_before(fifo->jiffies + HZ / 100, jiffies)) {
2125                 struct __vxge_hw_fifo *hw_fifo = fifo->handle;
2126
2127                 fifo->jiffies = jiffies;
2128                 if (fifo->interrupt_count > VXGE_T1A_MAX_TX_INTERRUPT_COUNT &&
2129                     hw_fifo->rtimer != VXGE_TTI_RTIMER_ADAPT_VAL) {
2130                         hw_fifo->rtimer = VXGE_TTI_RTIMER_ADAPT_VAL;
2131                         vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo);
2132                 } else if (hw_fifo->rtimer != 0) {
2133                         hw_fifo->rtimer = 0;
2134                         vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo);
2135                 }
2136                 fifo->interrupt_count = 0;
2137         }
2138 }
2139
2140 /**
2141  *  adaptive_coalesce_rx_interrupts - Changes the interrupt coalescing
2142  *  if the interrupts are not within a range
2143  *  @ring: pointer to receive ring structure
2144  *  Description: The function increases of decreases the packet counts within
2145  *  the ranges of traffic utilization, if the interrupts due to this ring are
2146  *  not within a fixed range.
2147  *  Return Value: Nothing
2148  */
2149 static void adaptive_coalesce_rx_interrupts(struct vxge_ring *ring)
2150 {
2151         ring->interrupt_count++;
2152         if (time_before(ring->jiffies + HZ / 100, jiffies)) {
2153                 struct __vxge_hw_ring *hw_ring = ring->handle;
2154
2155                 ring->jiffies = jiffies;
2156                 if (ring->interrupt_count > VXGE_T1A_MAX_INTERRUPT_COUNT &&
2157                     hw_ring->rtimer != VXGE_RTI_RTIMER_ADAPT_VAL) {
2158                         hw_ring->rtimer = VXGE_RTI_RTIMER_ADAPT_VAL;
2159                         vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring);
2160                 } else if (hw_ring->rtimer != 0) {
2161                         hw_ring->rtimer = 0;
2162                         vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring);
2163                 }
2164                 ring->interrupt_count = 0;
2165         }
2166 }
2167
2168 /*
2169  *  vxge_isr_napi
2170  *  @irq: the irq of the device.
2171  *  @dev_id: a void pointer to the hldev structure of the Titan device
2172  *  @ptregs: pointer to the registers pushed on the stack.
2173  *
2174  *  This function is the ISR handler of the device when napi is enabled. It
2175  *  identifies the reason for the interrupt and calls the relevant service
2176  *  routines.
2177  */
2178 static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
2179 {
2180         struct net_device *dev;
2181         struct __vxge_hw_device *hldev;
2182         u64 reason;
2183         enum vxge_hw_status status;
2184         struct vxgedev *vdev = (struct vxgedev *)dev_id;
2185
2186         vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);
2187
2188         dev = vdev->ndev;
2189         hldev = pci_get_drvdata(vdev->pdev);
2190
2191         if (pci_channel_offline(vdev->pdev))
2192                 return IRQ_NONE;
2193
2194         if (unlikely(!is_vxge_card_up(vdev)))
2195                 return IRQ_HANDLED;
2196
2197         status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode, &reason);
2198         if (status == VXGE_HW_OK) {
2199                 vxge_hw_device_mask_all(hldev);
2200
2201                 if (reason &
2202                         VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
2203                         vdev->vpaths_deployed >>
2204                         (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {
2205
2206                         vxge_hw_device_clear_tx_rx(hldev);
2207                         napi_schedule(&vdev->napi);
2208                         vxge_debug_intr(VXGE_TRACE,
2209                                 "%s:%d  Exiting...", __func__, __LINE__);
2210                         return IRQ_HANDLED;
2211                 } else
2212                         vxge_hw_device_unmask_all(hldev);
2213         } else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
2214                 (status == VXGE_HW_ERR_CRITICAL) ||
2215                 (status == VXGE_HW_ERR_FIFO))) {
2216                 vxge_hw_device_mask_all(hldev);
2217                 vxge_hw_device_flush_io(hldev);
2218                 return IRQ_HANDLED;
2219         } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
2220                 return IRQ_HANDLED;
2221
2222         vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
2223         return IRQ_NONE;
2224 }
2225
2226 static irqreturn_t vxge_tx_msix_handle(int irq, void *dev_id)
2227 {
2228         struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;
2229
2230         adaptive_coalesce_tx_interrupts(fifo);
2231
2232         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)fifo->handle,
2233                                   fifo->tx_vector_no);
2234
2235         vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)fifo->handle,
2236                                    fifo->tx_vector_no);
2237
2238         VXGE_COMPLETE_VPATH_TX(fifo);
2239
2240         vxge_hw_channel_msix_unmask((struct __vxge_hw_channel *)fifo->handle,
2241                                     fifo->tx_vector_no);
2242
2243         mmiowb();
2244
2245         return IRQ_HANDLED;
2246 }
2247
2248 static irqreturn_t vxge_rx_msix_napi_handle(int irq, void *dev_id)
2249 {
2250         struct vxge_ring *ring = (struct vxge_ring *)dev_id;
2251
2252         adaptive_coalesce_rx_interrupts(ring);
2253
2254         vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
2255                                   ring->rx_vector_no);
2256
2257         vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)ring->handle,
2258                                    ring->rx_vector_no);
2259
2260         napi_schedule(&ring->napi);
2261         return IRQ_HANDLED;
2262 }
2263
2264 static irqreturn_t
2265 vxge_alarm_msix_handle(int irq, void *dev_id)
2266 {
2267         int i;
2268         enum vxge_hw_status status;
2269         struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
2270         struct vxgedev *vdev = vpath->vdev;
2271         int msix_id = (vpath->handle->vpath->vp_id *
2272                 VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2273
2274         for (i = 0; i < vdev->no_of_vpath; i++) {
2275                 /* Reduce the chance of losing alarm interrupts by masking
2276                  * the vector. A pending bit will be set if an alarm is
2277                  * generated and on unmask the interrupt will be fired.
2278                  */
2279                 vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
2280                 vxge_hw_vpath_msix_clear(vdev->vpaths[i].handle, msix_id);
2281                 mmiowb();
2282
2283                 status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
2284                         vdev->exec_mode);
2285                 if (status == VXGE_HW_OK) {
2286                         vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
2287                                                   msix_id);
2288                         mmiowb();
2289                         continue;
2290                 }
2291                 vxge_debug_intr(VXGE_ERR,
2292                         "%s: vxge_hw_vpath_alarm_process failed %x ",
2293                         VXGE_DRIVER_NAME, status);
2294         }
2295         return IRQ_HANDLED;
2296 }
2297
2298 static int vxge_alloc_msix(struct vxgedev *vdev)
2299 {
2300         int j, i, ret = 0;
2301         int msix_intr_vect = 0, temp;
2302         vdev->intr_cnt = 0;
2303
2304 start:
2305         /* Tx/Rx MSIX Vectors count */
2306         vdev->intr_cnt = vdev->no_of_vpath * 2;
2307
2308         /* Alarm MSIX Vectors count */
2309         vdev->intr_cnt++;
2310
2311         vdev->entries = kcalloc(vdev->intr_cnt, sizeof(struct msix_entry),
2312                                 GFP_KERNEL);
2313         if (!vdev->entries) {
2314                 vxge_debug_init(VXGE_ERR,
2315                         "%s: memory allocation failed",
2316                         VXGE_DRIVER_NAME);
2317                 ret = -ENOMEM;
2318                 goto alloc_entries_failed;
2319         }
2320
2321         vdev->vxge_entries = kcalloc(vdev->intr_cnt,
2322                                      sizeof(struct vxge_msix_entry),
2323                                      GFP_KERNEL);
2324         if (!vdev->vxge_entries) {
2325                 vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
2326                         VXGE_DRIVER_NAME);
2327                 ret = -ENOMEM;
2328                 goto alloc_vxge_entries_failed;
2329         }
2330
2331         for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
2332
2333                 msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;
2334
2335                 /* Initialize the fifo vector */
2336                 vdev->entries[j].entry = msix_intr_vect;
2337                 vdev->vxge_entries[j].entry = msix_intr_vect;
2338                 vdev->vxge_entries[j].in_use = 0;
2339                 j++;
2340
2341                 /* Initialize the ring vector */
2342                 vdev->entries[j].entry = msix_intr_vect + 1;
2343                 vdev->vxge_entries[j].entry = msix_intr_vect + 1;
2344                 vdev->vxge_entries[j].in_use = 0;
2345                 j++;
2346         }
2347
2348         /* Initialize the alarm vector */
2349         vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
2350         vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
2351         vdev->vxge_entries[j].in_use = 0;
2352
2353         ret = pci_enable_msix_range(vdev->pdev,
2354                                     vdev->entries, 3, vdev->intr_cnt);
2355         if (ret < 0) {
2356                 ret = -ENODEV;
2357                 goto enable_msix_failed;
2358         } else if (ret < vdev->intr_cnt) {
2359                 pci_disable_msix(vdev->pdev);
2360
2361                 vxge_debug_init(VXGE_ERR,
2362                         "%s: MSI-X enable failed for %d vectors, ret: %d",
2363                         VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
2364                 if (max_config_vpath != VXGE_USE_DEFAULT) {
2365                         ret = -ENODEV;
2366                         goto enable_msix_failed;
2367                 }
2368
2369                 kfree(vdev->entries);
2370                 kfree(vdev->vxge_entries);
2371                 vdev->entries = NULL;
2372                 vdev->vxge_entries = NULL;
2373                 /* Try with less no of vector by reducing no of vpaths count */
2374                 temp = (ret - 1)/2;
2375                 vxge_close_vpaths(vdev, temp);
2376                 vdev->no_of_vpath = temp;
2377                 goto start;
2378         }
2379         return 0;
2380
2381 enable_msix_failed:
2382         kfree(vdev->vxge_entries);
2383 alloc_vxge_entries_failed:
2384         kfree(vdev->entries);
2385 alloc_entries_failed:
2386         return ret;
2387 }
2388
2389 static int vxge_enable_msix(struct vxgedev *vdev)
2390 {
2391
2392         int i, ret = 0;
2393         /* 0 - Tx, 1 - Rx  */
2394         int tim_msix_id[4] = {0, 1, 0, 0};
2395
2396         vdev->intr_cnt = 0;
2397
2398         /* allocate msix vectors */
2399         ret = vxge_alloc_msix(vdev);
2400         if (!ret) {
2401                 for (i = 0; i < vdev->no_of_vpath; i++) {
2402                         struct vxge_vpath *vpath = &vdev->vpaths[i];
2403
2404                         /* If fifo or ring are not enabled, the MSIX vector for
2405                          * it should be set to 0.
2406                          */
2407                         vpath->ring.rx_vector_no = (vpath->device_id *
2408                                                 VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
2409
2410                         vpath->fifo.tx_vector_no = (vpath->device_id *
2411                                                 VXGE_HW_VPATH_MSIX_ACTIVE);
2412
2413                         vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
2414                                                VXGE_ALARM_MSIX_ID);
2415                 }
2416         }
2417
2418         return ret;
2419 }
2420
2421 static void vxge_rem_msix_isr(struct vxgedev *vdev)
2422 {
2423         int intr_cnt;
2424
2425         for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
2426                 intr_cnt++) {
2427                 if (vdev->vxge_entries[intr_cnt].in_use) {
2428                         synchronize_irq(vdev->entries[intr_cnt].vector);
2429                         free_irq(vdev->entries[intr_cnt].vector,
2430                                 vdev->vxge_entries[intr_cnt].arg);
2431                         vdev->vxge_entries[intr_cnt].in_use = 0;
2432                 }
2433         }
2434
2435         kfree(vdev->entries);
2436         kfree(vdev->vxge_entries);
2437         vdev->entries = NULL;
2438         vdev->vxge_entries = NULL;
2439
2440         if (vdev->config.intr_type == MSI_X)
2441                 pci_disable_msix(vdev->pdev);
2442 }
2443
2444 static void vxge_rem_isr(struct vxgedev *vdev)
2445 {
2446         if (IS_ENABLED(CONFIG_PCI_MSI) &&
2447             vdev->config.intr_type == MSI_X) {
2448                 vxge_rem_msix_isr(vdev);
2449         } else if (vdev->config.intr_type == INTA) {
2450                         synchronize_irq(vdev->pdev->irq);
2451                         free_irq(vdev->pdev->irq, vdev);
2452         }
2453 }
2454
2455 static int vxge_add_isr(struct vxgedev *vdev)
2456 {
2457         int ret = 0;
2458         int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
2459         int pci_fun = PCI_FUNC(vdev->pdev->devfn);
2460
2461         if (IS_ENABLED(CONFIG_PCI_MSI) && vdev->config.intr_type == MSI_X)
2462                 ret = vxge_enable_msix(vdev);
2463
2464         if (ret) {
2465                 vxge_debug_init(VXGE_ERR,
2466                         "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2467                 vxge_debug_init(VXGE_ERR,
2468                         "%s: Defaulting to INTA", VXGE_DRIVER_NAME);
2469                 vdev->config.intr_type = INTA;
2470         }
2471
2472         if (IS_ENABLED(CONFIG_PCI_MSI) && vdev->config.intr_type == MSI_X) {
2473                 for (intr_idx = 0;
2474                      intr_idx < (vdev->no_of_vpath *
2475                         VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {
2476
2477                         msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
2478                         irq_req = 0;
2479
2480                         switch (msix_idx) {
2481                         case 0:
2482                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2483                                 "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
2484                                         vdev->ndev->name,
2485                                         vdev->entries[intr_cnt].entry,
2486                                         pci_fun, vp_idx);
2487                                 ret = request_irq(
2488                                     vdev->entries[intr_cnt].vector,
2489                                         vxge_tx_msix_handle, 0,
2490                                         vdev->desc[intr_cnt],
2491                                         &vdev->vpaths[vp_idx].fifo);
2492                                         vdev->vxge_entries[intr_cnt].arg =
2493                                                 &vdev->vpaths[vp_idx].fifo;
2494                                 irq_req = 1;
2495                                 break;
2496                         case 1:
2497                                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2498                                 "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
2499                                         vdev->ndev->name,
2500                                         vdev->entries[intr_cnt].entry,
2501                                         pci_fun, vp_idx);
2502                                 ret = request_irq(
2503                                     vdev->entries[intr_cnt].vector,
2504                                         vxge_rx_msix_napi_handle,
2505                                         0,
2506                                         vdev->desc[intr_cnt],
2507                                         &vdev->vpaths[vp_idx].ring);
2508                                         vdev->vxge_entries[intr_cnt].arg =
2509                                                 &vdev->vpaths[vp_idx].ring;
2510                                 irq_req = 1;
2511                                 break;
2512                         }
2513
2514                         if (ret) {
2515                                 vxge_debug_init(VXGE_ERR,
2516                                         "%s: MSIX - %d  Registration failed",
2517                                         vdev->ndev->name, intr_cnt);
2518                                 vxge_rem_msix_isr(vdev);
2519                                 vdev->config.intr_type = INTA;
2520                                 vxge_debug_init(VXGE_ERR,
2521                                         "%s: Defaulting to INTA"
2522                                         , vdev->ndev->name);
2523                                         goto INTA_MODE;
2524                         }
2525
2526                         if (irq_req) {
2527                                 /* We requested for this msix interrupt */
2528                                 vdev->vxge_entries[intr_cnt].in_use = 1;
2529                                 msix_idx +=  vdev->vpaths[vp_idx].device_id *
2530                                         VXGE_HW_VPATH_MSIX_ACTIVE;
2531                                 vxge_hw_vpath_msix_unmask(
2532                                         vdev->vpaths[vp_idx].handle,
2533                                         msix_idx);
2534                                 intr_cnt++;
2535                         }
2536
2537                         /* Point to next vpath handler */
2538                         if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
2539                             (vp_idx < (vdev->no_of_vpath - 1)))
2540                                 vp_idx++;
2541                 }
2542
2543                 intr_cnt = vdev->no_of_vpath * 2;
2544                 snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2545                         "%s:vxge:MSI-X %d - Alarm - fn:%d",
2546                         vdev->ndev->name,
2547                         vdev->entries[intr_cnt].entry,
2548                         pci_fun);
2549                 /* For Alarm interrupts */
2550                 ret = request_irq(vdev->entries[intr_cnt].vector,
2551                                         vxge_alarm_msix_handle, 0,
2552                                         vdev->desc[intr_cnt],
2553                                         &vdev->vpaths[0]);
2554                 if (ret) {
2555                         vxge_debug_init(VXGE_ERR,
2556                                 "%s: MSIX - %d Registration failed",
2557                                 vdev->ndev->name, intr_cnt);
2558                         vxge_rem_msix_isr(vdev);
2559                         vdev->config.intr_type = INTA;
2560                         vxge_debug_init(VXGE_ERR,
2561                                 "%s: Defaulting to INTA",
2562                                 vdev->ndev->name);
2563                                 goto INTA_MODE;
2564                 }
2565
2566                 msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
2567                         VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2568                 vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2569                                         msix_idx);
2570                 vdev->vxge_entries[intr_cnt].in_use = 1;
2571                 vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
2572         }
2573
2574 INTA_MODE:
2575         if (vdev->config.intr_type == INTA) {
2576                 snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
2577                         "%s:vxge:INTA", vdev->ndev->name);
2578                 vxge_hw_device_set_intr_type(vdev->devh,
2579                         VXGE_HW_INTR_MODE_IRQLINE);
2580
2581                 vxge_hw_vpath_tti_ci_set(vdev->vpaths[0].fifo.handle);
2582
2583                 ret = request_irq((int) vdev->pdev->irq,
2584                         vxge_isr_napi,
2585                         IRQF_SHARED, vdev->desc[0], vdev);
2586                 if (ret) {
2587                         vxge_debug_init(VXGE_ERR,
2588                                 "%s %s-%d: ISR registration failed",
2589                                 VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
2590                         return -ENODEV;
2591                 }
2592                 vxge_debug_init(VXGE_TRACE,
2593                         "new %s-%d line allocated",
2594                         "IRQ", vdev->pdev->irq);
2595         }
2596
2597         return VXGE_HW_OK;
2598 }
2599
2600 static void vxge_poll_vp_reset(unsigned long data)
2601 {
2602         struct vxgedev *vdev = (struct vxgedev *)data;
2603         int i, j = 0;
2604
2605         for (i = 0; i < vdev->no_of_vpath; i++) {
2606                 if (test_bit(i, &vdev->vp_reset)) {
2607                         vxge_reset_vpath(vdev, i);
2608                         j++;
2609                 }
2610         }
2611         if (j && (vdev->config.intr_type != MSI_X)) {
2612                 vxge_hw_device_unmask_all(vdev->devh);
2613                 vxge_hw_device_flush_io(vdev->devh);
2614         }
2615
2616         mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
2617 }
2618
2619 static void vxge_poll_vp_lockup(unsigned long data)
2620 {
2621         struct vxgedev *vdev = (struct vxgedev *)data;
2622         enum vxge_hw_status status = VXGE_HW_OK;
2623         struct vxge_vpath *vpath;
2624         struct vxge_ring *ring;
2625         int i;
2626         unsigned long rx_frms;
2627
2628         for (i = 0; i < vdev->no_of_vpath; i++) {
2629                 ring = &vdev->vpaths[i].ring;
2630
2631                 /* Truncated to machine word size number of frames */
2632                 rx_frms = ACCESS_ONCE(ring->stats.rx_frms);
2633
2634                 /* Did this vpath received any packets */
2635                 if (ring->stats.prev_rx_frms == rx_frms) {
2636                         status = vxge_hw_vpath_check_leak(ring->handle);
2637
2638                         /* Did it received any packets last time */
2639                         if ((VXGE_HW_FAIL == status) &&
2640                                 (VXGE_HW_FAIL == ring->last_status)) {
2641
2642                                 /* schedule vpath reset */
2643                                 if (!test_and_set_bit(i, &vdev->vp_reset)) {
2644                                         vpath = &vdev->vpaths[i];
2645
2646                                         /* disable interrupts for this vpath */
2647                                         vxge_vpath_intr_disable(vdev, i);
2648
2649                                         /* stop the queue for this vpath */
2650                                         netif_tx_stop_queue(vpath->fifo.txq);
2651                                         continue;
2652                                 }
2653                         }
2654                 }
2655                 ring->stats.prev_rx_frms = rx_frms;
2656                 ring->last_status = status;
2657         }
2658
2659         /* Check every 1 milli second */
2660         mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
2661 }
2662
2663 static netdev_features_t vxge_fix_features(struct net_device *dev,
2664         netdev_features_t features)
2665 {
2666         netdev_features_t changed = dev->features ^ features;
2667
2668         /* Enabling RTH requires some of the logic in vxge_device_register and a
2669          * vpath reset.  Due to these restrictions, only allow modification
2670          * while the interface is down.
2671          */
2672         if ((changed & NETIF_F_RXHASH) && netif_running(dev))
2673                 features ^= NETIF_F_RXHASH;
2674
2675         return features;
2676 }
2677
2678 static int vxge_set_features(struct net_device *dev, netdev_features_t features)
2679 {
2680         struct vxgedev *vdev = netdev_priv(dev);
2681         netdev_features_t changed = dev->features ^ features;
2682
2683         if (!(changed & NETIF_F_RXHASH))
2684                 return 0;
2685
2686         /* !netif_running() ensured by vxge_fix_features() */
2687
2688         vdev->devh->config.rth_en = !!(features & NETIF_F_RXHASH);
2689         if (vxge_reset_all_vpaths(vdev) != VXGE_HW_OK) {
2690                 dev->features = features ^ NETIF_F_RXHASH;
2691                 vdev->devh->config.rth_en = !!(dev->features & NETIF_F_RXHASH);
2692                 return -EIO;
2693         }
2694
2695         return 0;
2696 }
2697
2698 /**
2699  * vxge_open
2700  * @dev: pointer to the device structure.
2701  *
2702  * This function is the open entry point of the driver. It mainly calls a
2703  * function to allocate Rx buffers and inserts them into the buffer
2704  * descriptors and then enables the Rx part of the NIC.
2705  * Return value: '0' on success and an appropriate (-)ve integer as
2706  * defined in errno.h file on failure.
2707  */
2708 static int vxge_open(struct net_device *dev)
2709 {
2710         enum vxge_hw_status status;
2711         struct vxgedev *vdev;
2712         struct __vxge_hw_device *hldev;
2713         struct vxge_vpath *vpath;
2714         int ret = 0;
2715         int i;
2716         u64 val64, function_mode;
2717
2718         vxge_debug_entryexit(VXGE_TRACE,
2719                 "%s: %s:%d", dev->name, __func__, __LINE__);
2720
2721         vdev = netdev_priv(dev);
2722         hldev = pci_get_drvdata(vdev->pdev);
2723         function_mode = vdev->config.device_hw_info.function_mode;
2724
2725         /* make sure you have link off by default every time Nic is
2726          * initialized */
2727         netif_carrier_off(dev);
2728
2729         /* Open VPATHs */
2730         status = vxge_open_vpaths(vdev);
2731         if (status != VXGE_HW_OK) {
2732                 vxge_debug_init(VXGE_ERR,
2733                         "%s: fatal: Vpath open failed", vdev->ndev->name);
2734                 ret = -EPERM;
2735                 goto out0;
2736         }
2737
2738         vdev->mtu = dev->mtu;
2739
2740         status = vxge_add_isr(vdev);
2741         if (status != VXGE_HW_OK) {
2742                 vxge_debug_init(VXGE_ERR,
2743                         "%s: fatal: ISR add failed", dev->name);
2744                 ret = -EPERM;
2745                 goto out1;
2746         }
2747
2748         if (vdev->config.intr_type != MSI_X) {
2749                 netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
2750                         vdev->config.napi_weight);
2751                 napi_enable(&vdev->napi);
2752                 for (i = 0; i < vdev->no_of_vpath; i++) {
2753                         vpath = &vdev->vpaths[i];
2754                         vpath->ring.napi_p = &vdev->napi;
2755                 }
2756         } else {
2757                 for (i = 0; i < vdev->no_of_vpath; i++) {
2758                         vpath = &vdev->vpaths[i];
2759                         netif_napi_add(dev, &vpath->ring.napi,
2760                             vxge_poll_msix, vdev->config.napi_weight);
2761                         napi_enable(&vpath->ring.napi);
2762                         vpath->ring.napi_p = &vpath->ring.napi;
2763                 }
2764         }
2765
2766         /* configure RTH */
2767         if (vdev->config.rth_steering) {
2768                 status = vxge_rth_configure(vdev);
2769                 if (status != VXGE_HW_OK) {
2770                         vxge_debug_init(VXGE_ERR,
2771                                 "%s: fatal: RTH configuration failed",
2772                                 dev->name);
2773                         ret = -EPERM;
2774                         goto out2;
2775                 }
2776         }
2777         printk(KERN_INFO "%s: Receive Hashing Offload %s\n", dev->name,
2778                hldev->config.rth_en ? "enabled" : "disabled");
2779
2780         for (i = 0; i < vdev->no_of_vpath; i++) {
2781                 vpath = &vdev->vpaths[i];
2782
2783                 /* set initial mtu before enabling the device */
2784                 status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu);
2785                 if (status != VXGE_HW_OK) {
2786                         vxge_debug_init(VXGE_ERR,
2787                                 "%s: fatal: can not set new MTU", dev->name);
2788                         ret = -EPERM;
2789                         goto out2;
2790                 }
2791         }
2792
2793         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
2794         vxge_debug_init(vdev->level_trace,
2795                 "%s: MTU is %d", vdev->ndev->name, vdev->mtu);
2796         VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);
2797
2798         /* Restore the DA, VID table and also multicast and promiscuous mode
2799          * states
2800          */
2801         if (vdev->all_multi_flg) {
2802                 for (i = 0; i < vdev->no_of_vpath; i++) {
2803                         vpath = &vdev->vpaths[i];
2804                         vxge_restore_vpath_mac_addr(vpath);
2805                         vxge_restore_vpath_vid_table(vpath);
2806
2807                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2808                         if (status != VXGE_HW_OK)
2809                                 vxge_debug_init(VXGE_ERR,
2810                                         "%s:%d Enabling multicast failed",
2811                                         __func__, __LINE__);
2812                 }
2813         }
2814
2815         /* Enable vpath to sniff all unicast/multicast traffic that not
2816          * addressed to them. We allow promiscuous mode for PF only
2817          */
2818
2819         val64 = 0;
2820         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
2821                 val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);
2822
2823         vxge_hw_mgmt_reg_write(vdev->devh,
2824                 vxge_hw_mgmt_reg_type_mrpcim,
2825                 0,
2826                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2827                         rxmac_authorize_all_addr),
2828                 val64);
2829
2830         vxge_hw_mgmt_reg_write(vdev->devh,
2831                 vxge_hw_mgmt_reg_type_mrpcim,
2832                 0,
2833                 (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2834                         rxmac_authorize_all_vid),
2835                 val64);
2836
2837         vxge_set_multicast(dev);
2838
2839         /* Enabling Bcast and mcast for all vpath */
2840         for (i = 0; i < vdev->no_of_vpath; i++) {
2841                 vpath = &vdev->vpaths[i];
2842                 status = vxge_hw_vpath_bcast_enable(vpath->handle);
2843                 if (status != VXGE_HW_OK)
2844                         vxge_debug_init(VXGE_ERR,
2845                                 "%s : Can not enable bcast for vpath "
2846                                 "id %d", dev->name, i);
2847                 if (vdev->config.addr_learn_en) {
2848                         status = vxge_hw_vpath_mcast_enable(vpath->handle);
2849                         if (status != VXGE_HW_OK)
2850                                 vxge_debug_init(VXGE_ERR,
2851                                         "%s : Can not enable mcast for vpath "
2852                                         "id %d", dev->name, i);
2853                 }
2854         }
2855
2856         vxge_hw_device_setpause_data(vdev->devh, 0,
2857                 vdev->config.tx_pause_enable,
2858                 vdev->config.rx_pause_enable);
2859
2860         if (vdev->vp_reset_timer.function == NULL)
2861                 vxge_os_timer(&vdev->vp_reset_timer, vxge_poll_vp_reset, vdev,
2862                               HZ / 2);
2863
2864         /* There is no need to check for RxD leak and RxD lookup on Titan1A */
2865         if (vdev->titan1 && vdev->vp_lockup_timer.function == NULL)
2866                 vxge_os_timer(&vdev->vp_lockup_timer, vxge_poll_vp_lockup, vdev,
2867                               HZ / 2);
2868
2869         set_bit(__VXGE_STATE_CARD_UP, &vdev->state);
2870
2871         smp_wmb();
2872
2873         if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
2874                 netif_carrier_on(vdev->ndev);
2875                 netdev_notice(vdev->ndev, "Link Up\n");
2876                 vdev->stats.link_up++;
2877         }
2878
2879         vxge_hw_device_intr_enable(vdev->devh);
2880
2881         smp_wmb();
2882
2883         for (i = 0; i < vdev->no_of_vpath; i++) {
2884                 vpath = &vdev->vpaths[i];
2885
2886                 vxge_hw_vpath_enable(vpath->handle);
2887                 smp_wmb();
2888                 vxge_hw_vpath_rx_doorbell_init(vpath->handle);
2889         }
2890
2891         netif_tx_start_all_queues(vdev->ndev);
2892
2893         /* configure CI */
2894         vxge_config_ci_for_tti_rti(vdev);
2895
2896         goto out0;
2897
2898 out2:
2899         vxge_rem_isr(vdev);
2900
2901         /* Disable napi */
2902         if (vdev->config.intr_type != MSI_X)
2903                 napi_disable(&vdev->napi);
2904         else {
2905                 for (i = 0; i < vdev->no_of_vpath; i++)
2906                         napi_disable(&vdev->vpaths[i].ring.napi);
2907         }
2908
2909 out1:
2910         vxge_close_vpaths(vdev, 0);
2911 out0:
2912         vxge_debug_entryexit(VXGE_TRACE,
2913                                 "%s: %s:%d  Exiting...",
2914                                 dev->name, __func__, __LINE__);
2915         return ret;
2916 }
2917
2918 /* Loop through the mac address list and delete all the entries */
2919 static void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2920 {
2921
2922         struct list_head *entry, *next;
2923         if (list_empty(&vpath->mac_addr_list))
2924                 return;
2925
2926         list_for_each_safe(entry, next, &vpath->mac_addr_list) {
2927                 list_del(entry);
2928                 kfree((struct vxge_mac_addrs *)entry);
2929         }
2930 }
2931
2932 static void vxge_napi_del_all(struct vxgedev *vdev)
2933 {
2934         int i;
2935         if (vdev->config.intr_type != MSI_X)
2936                 netif_napi_del(&vdev->napi);
2937         else {
2938                 for (i = 0; i < vdev->no_of_vpath; i++)
2939                         netif_napi_del(&vdev->vpaths[i].ring.napi);
2940         }
2941 }
2942
2943 static int do_vxge_close(struct net_device *dev, int do_io)
2944 {
2945         enum vxge_hw_status status;
2946         struct vxgedev *vdev;
2947         struct __vxge_hw_device *hldev;
2948         int i;
2949         u64 val64, vpath_vector;
2950         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
2951                 dev->name, __func__, __LINE__);
2952
2953         vdev = netdev_priv(dev);
2954         hldev = pci_get_drvdata(vdev->pdev);
2955
2956         if (unlikely(!is_vxge_card_up(vdev)))
2957                 return 0;
2958
2959         /* If vxge_handle_crit_err task is executing,
2960          * wait till it completes. */
2961         while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
2962                 msleep(50);
2963
2964         if (do_io) {
2965                 /* Put the vpath back in normal mode */
2966                 vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
2967                 status = vxge_hw_mgmt_reg_read(vdev->devh,
2968                                 vxge_hw_mgmt_reg_type_mrpcim,
2969                                 0,
2970                                 (ulong)offsetof(
2971                                         struct vxge_hw_mrpcim_reg,
2972                                         rts_mgr_cbasin_cfg),
2973                                 &val64);
2974                 if (status == VXGE_HW_OK) {
2975                         val64 &= ~vpath_vector;
2976                         status = vxge_hw_mgmt_reg_write(vdev->devh,
2977                                         vxge_hw_mgmt_reg_type_mrpcim,
2978                                         0,
2979                                         (ulong)offsetof(
2980                                                 struct vxge_hw_mrpcim_reg,
2981                                                 rts_mgr_cbasin_cfg),
2982                                         val64);
2983                 }
2984
2985                 /* Remove the function 0 from promiscuous mode */
2986                 vxge_hw_mgmt_reg_write(vdev->devh,
2987                         vxge_hw_mgmt_reg_type_mrpcim,
2988                         0,
2989                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2990                                 rxmac_authorize_all_addr),
2991                         0);
2992
2993                 vxge_hw_mgmt_reg_write(vdev->devh,
2994                         vxge_hw_mgmt_reg_type_mrpcim,
2995                         0,
2996                         (ulong)offsetof(struct vxge_hw_mrpcim_reg,
2997                                 rxmac_authorize_all_vid),
2998                         0);
2999
3000                 smp_wmb();
3001         }
3002
3003         if (vdev->titan1)
3004                 del_timer_sync(&vdev->vp_lockup_timer);
3005
3006         del_timer_sync(&vdev->vp_reset_timer);
3007
3008         if (do_io)
3009                 vxge_hw_device_wait_receive_idle(hldev);
3010
3011         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3012
3013         /* Disable napi */
3014         if (vdev->config.intr_type != MSI_X)
3015                 napi_disable(&vdev->napi);
3016         else {
3017                 for (i = 0; i < vdev->no_of_vpath; i++)
3018                         napi_disable(&vdev->vpaths[i].ring.napi);
3019         }
3020
3021         netif_carrier_off(vdev->ndev);
3022         netdev_notice(vdev->ndev, "Link Down\n");
3023         netif_tx_stop_all_queues(vdev->ndev);
3024
3025         /* Note that at this point xmit() is stopped by upper layer */
3026         if (do_io)
3027                 vxge_hw_device_intr_disable(vdev->devh);
3028
3029         vxge_rem_isr(vdev);
3030
3031         vxge_napi_del_all(vdev);
3032
3033         if (do_io)
3034                 vxge_reset_all_vpaths(vdev);
3035
3036         vxge_close_vpaths(vdev, 0);
3037
3038         vxge_debug_entryexit(VXGE_TRACE,
3039                 "%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);
3040
3041         clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
3042
3043         return 0;
3044 }
3045
3046 /**
3047  * vxge_close
3048  * @dev: device pointer.
3049  *
3050  * This is the stop entry point of the driver. It needs to undo exactly
3051  * whatever was done by the open entry point, thus it's usually referred to
3052  * as the close function.Among other things this function mainly stops the
3053  * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
3054  * Return value: '0' on success and an appropriate (-)ve integer as
3055  * defined in errno.h file on failure.
3056  */
3057 static int vxge_close(struct net_device *dev)
3058 {
3059         do_vxge_close(dev, 1);
3060         return 0;
3061 }
3062
3063 /**
3064  * vxge_change_mtu
3065  * @dev: net device pointer.
3066  * @new_mtu :the new MTU size for the device.
3067  *
3068  * A driver entry point to change MTU size for the device. Before changing
3069  * the MTU the device must be stopped.
3070  */
3071 static int vxge_change_mtu(struct net_device *dev, int new_mtu)
3072 {
3073         struct vxgedev *vdev = netdev_priv(dev);
3074
3075         vxge_debug_entryexit(vdev->level_trace,
3076                 "%s:%d", __func__, __LINE__);
3077
3078         /* check if device is down already */
3079         if (unlikely(!is_vxge_card_up(vdev))) {
3080                 /* just store new value, will use later on open() */
3081                 dev->mtu = new_mtu;
3082                 vxge_debug_init(vdev->level_err,
3083                         "%s", "device is down on MTU change");
3084                 return 0;
3085         }
3086
3087         vxge_debug_init(vdev->level_trace,
3088                 "trying to apply new MTU %d", new_mtu);
3089
3090         if (vxge_close(dev))
3091                 return -EIO;
3092
3093         dev->mtu = new_mtu;
3094         vdev->mtu = new_mtu;
3095
3096         if (vxge_open(dev))
3097                 return -EIO;
3098
3099         vxge_debug_init(vdev->level_trace,
3100                 "%s: MTU changed to %d", vdev->ndev->name, new_mtu);
3101
3102         vxge_debug_entryexit(vdev->level_trace,
3103                 "%s:%d  Exiting...", __func__, __LINE__);
3104
3105         return 0;
3106 }
3107
3108 /**
3109  * vxge_get_stats64
3110  * @dev: pointer to the device structure
3111  * @stats: pointer to struct rtnl_link_stats64
3112  *
3113  */
3114 static void
3115 vxge_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *net_stats)
3116 {
3117         struct vxgedev *vdev = netdev_priv(dev);
3118         int k;
3119
3120         /* net_stats already zeroed by caller */
3121         for (k = 0; k < vdev->no_of_vpath; k++) {
3122                 struct vxge_ring_stats *rxstats = &vdev->vpaths[k].ring.stats;
3123                 struct vxge_fifo_stats *txstats = &vdev->vpaths[k].fifo.stats;
3124                 unsigned int start;
3125                 u64 packets, bytes, multicast;
3126
3127                 do {
3128                         start = u64_stats_fetch_begin_irq(&rxstats->syncp);
3129
3130                         packets   = rxstats->rx_frms;
3131                         multicast = rxstats->rx_mcast;
3132                         bytes     = rxstats->rx_bytes;
3133                 } while (u64_stats_fetch_retry_irq(&rxstats->syncp, start));
3134
3135                 net_stats->rx_packets += packets;
3136                 net_stats->rx_bytes += bytes;
3137                 net_stats->multicast += multicast;
3138
3139                 net_stats->rx_errors += rxstats->rx_errors;
3140                 net_stats->rx_dropped += rxstats->rx_dropped;
3141
3142                 do {
3143                         start = u64_stats_fetch_begin_irq(&txstats->syncp);
3144
3145                         packets = txstats->tx_frms;
3146                         bytes   = txstats->tx_bytes;
3147                 } while (u64_stats_fetch_retry_irq(&txstats->syncp, start));
3148
3149                 net_stats->tx_packets += packets;
3150                 net_stats->tx_bytes += bytes;
3151                 net_stats->tx_errors += txstats->tx_errors;
3152         }
3153 }
3154
3155 static enum vxge_hw_status vxge_timestamp_config(struct __vxge_hw_device *devh)
3156 {
3157         enum vxge_hw_status status;
3158         u64 val64;
3159
3160         /* Timestamp is passed to the driver via the FCS, therefore we
3161          * must disable the FCS stripping by the adapter.  Since this is
3162          * required for the driver to load (due to a hardware bug),
3163          * there is no need to do anything special here.
3164          */
3165         val64 = VXGE_HW_XMAC_TIMESTAMP_EN |
3166                 VXGE_HW_XMAC_TIMESTAMP_USE_LINK_ID(0) |
3167                 VXGE_HW_XMAC_TIMESTAMP_INTERVAL(0);
3168
3169         status = vxge_hw_mgmt_reg_write(devh,
3170                                         vxge_hw_mgmt_reg_type_mrpcim,
3171                                         0,
3172                                         offsetof(struct vxge_hw_mrpcim_reg,
3173                                                  xmac_timestamp),
3174                                         val64);
3175         vxge_hw_device_flush_io(devh);
3176         devh->config.hwts_en = VXGE_HW_HWTS_ENABLE;
3177         return status;
3178 }
3179
3180 static int vxge_hwtstamp_set(struct vxgedev *vdev, void __user *data)
3181 {
3182         struct hwtstamp_config config;
3183         int i;
3184
3185         if (copy_from_user(&config, data, sizeof(config)))
3186                 return -EFAULT;
3187
3188         /* reserved for future extensions */
3189         if (config.flags)
3190                 return -EINVAL;
3191
3192         /* Transmit HW Timestamp not supported */
3193         switch (config.tx_type) {
3194         case HWTSTAMP_TX_OFF:
3195                 break;
3196         case HWTSTAMP_TX_ON:
3197         default:
3198                 return -ERANGE;
3199         }
3200
3201         switch (config.rx_filter) {
3202         case HWTSTAMP_FILTER_NONE:
3203                 vdev->rx_hwts = 0;
3204                 config.rx_filter = HWTSTAMP_FILTER_NONE;
3205                 break;
3206
3207         case HWTSTAMP_FILTER_ALL:
3208         case HWTSTAMP_FILTER_SOME:
3209         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
3210         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
3211         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
3212         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
3213         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
3214         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
3215         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
3216         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
3217         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
3218         case HWTSTAMP_FILTER_PTP_V2_EVENT:
3219         case HWTSTAMP_FILTER_PTP_V2_SYNC:
3220         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
3221         case HWTSTAMP_FILTER_NTP_ALL:
3222                 if (vdev->devh->config.hwts_en != VXGE_HW_HWTS_ENABLE)
3223                         return -EFAULT;
3224
3225                 vdev->rx_hwts = 1;
3226                 config.rx_filter = HWTSTAMP_FILTER_ALL;
3227                 break;
3228
3229         default:
3230                  return -ERANGE;
3231         }
3232
3233         for (i = 0; i < vdev->no_of_vpath; i++)
3234                 vdev->vpaths[i].ring.rx_hwts = vdev->rx_hwts;
3235
3236         if (copy_to_user(data, &config, sizeof(config)))
3237                 return -EFAULT;
3238
3239         return 0;
3240 }
3241
3242 static int vxge_hwtstamp_get(struct vxgedev *vdev, void __user *data)
3243 {
3244         struct hwtstamp_config config;
3245
3246         config.flags = 0;
3247         config.tx_type = HWTSTAMP_TX_OFF;
3248         config.rx_filter = (vdev->rx_hwts ?
3249                             HWTSTAMP_FILTER_ALL : HWTSTAMP_FILTER_NONE);
3250
3251         if (copy_to_user(data, &config, sizeof(config)))
3252                 return -EFAULT;
3253
3254         return 0;
3255 }
3256
3257 /**
3258  * vxge_ioctl
3259  * @dev: Device pointer.
3260  * @ifr: An IOCTL specific structure, that can contain a pointer to
3261  *       a proprietary structure used to pass information to the driver.
3262  * @cmd: This is used to distinguish between the different commands that
3263  *       can be passed to the IOCTL functions.
3264  *
3265  * Entry point for the Ioctl.
3266  */
3267 static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3268 {
3269         struct vxgedev *vdev = netdev_priv(dev);
3270
3271         switch (cmd) {
3272         case SIOCSHWTSTAMP:
3273                 return vxge_hwtstamp_set(vdev, rq->ifr_data);
3274         case SIOCGHWTSTAMP:
3275                 return vxge_hwtstamp_get(vdev, rq->ifr_data);
3276         default:
3277                 return -EOPNOTSUPP;
3278         }
3279 }
3280
3281 /**
3282  * vxge_tx_watchdog
3283  * @dev: pointer to net device structure
3284  *
3285  * Watchdog for transmit side.
3286  * This function is triggered if the Tx Queue is stopped
3287  * for a pre-defined amount of time when the Interface is still up.
3288  */
3289 static void vxge_tx_watchdog(struct net_device *dev)
3290 {
3291         struct vxgedev *vdev;
3292
3293         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3294
3295         vdev = netdev_priv(dev);
3296
3297         vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;
3298
3299         schedule_work(&vdev->reset_task);
3300         vxge_debug_entryexit(VXGE_TRACE,
3301                 "%s:%d  Exiting...", __func__, __LINE__);
3302 }
3303
3304 /**
3305  * vxge_vlan_rx_add_vid
3306  * @dev: net device pointer.
3307  * @proto: vlan protocol
3308  * @vid: vid
3309  *
3310  * Add the vlan id to the devices vlan id table
3311  */
3312 static int
3313 vxge_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
3314 {
3315         struct vxgedev *vdev = netdev_priv(dev);
3316         struct vxge_vpath *vpath;
3317         int vp_id;
3318
3319         /* Add these vlan to the vid table */
3320         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3321                 vpath = &vdev->vpaths[vp_id];
3322                 if (!vpath->is_open)
3323                         continue;
3324                 vxge_hw_vpath_vid_add(vpath->handle, vid);
3325         }
3326         set_bit(vid, vdev->active_vlans);
3327         return 0;
3328 }
3329
3330 /**
3331  * vxge_vlan_rx_kill_vid
3332  * @dev: net device pointer.
3333  * @proto: vlan protocol
3334  * @vid: vid
3335  *
3336  * Remove the vlan id from the device's vlan id table
3337  */
3338 static int
3339 vxge_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
3340 {
3341         struct vxgedev *vdev = netdev_priv(dev);
3342         struct vxge_vpath *vpath;
3343         int vp_id;
3344
3345         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
3346
3347         /* Delete this vlan from the vid table */
3348         for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
3349                 vpath = &vdev->vpaths[vp_id];
3350                 if (!vpath->is_open)
3351                         continue;
3352                 vxge_hw_vpath_vid_delete(vpath->handle, vid);
3353         }
3354         vxge_debug_entryexit(VXGE_TRACE,
3355                 "%s:%d  Exiting...", __func__, __LINE__);
3356         clear_bit(vid, vdev->active_vlans);
3357         return 0;
3358 }
3359
3360 static const struct net_device_ops vxge_netdev_ops = {
3361         .ndo_open               = vxge_open,
3362         .ndo_stop               = vxge_close,
3363         .ndo_get_stats64        = vxge_get_stats64,
3364         .ndo_start_xmit         = vxge_xmit,
3365         .ndo_validate_addr      = eth_validate_addr,
3366         .ndo_set_rx_mode        = vxge_set_multicast,
3367         .ndo_do_ioctl           = vxge_ioctl,
3368         .ndo_set_mac_address    = vxge_set_mac_addr,
3369         .ndo_change_mtu         = vxge_change_mtu,
3370         .ndo_fix_features       = vxge_fix_features,
3371         .ndo_set_features       = vxge_set_features,
3372         .ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
3373         .ndo_vlan_rx_add_vid    = vxge_vlan_rx_add_vid,
3374         .ndo_tx_timeout         = vxge_tx_watchdog,
3375 #ifdef CONFIG_NET_POLL_CONTROLLER
3376         .ndo_poll_controller    = vxge_netpoll,
3377 #endif
3378 };
3379
3380 static int vxge_device_register(struct __vxge_hw_device *hldev,
3381                                 struct vxge_config *config, int high_dma,
3382                                 int no_of_vpath, struct vxgedev **vdev_out)
3383 {
3384         struct net_device *ndev;
3385         enum vxge_hw_status status = VXGE_HW_OK;
3386         struct vxgedev *vdev;
3387         int ret = 0, no_of_queue = 1;
3388         u64 stat;
3389
3390         *vdev_out = NULL;
3391         if (config->tx_steering_type)
3392                 no_of_queue = no_of_vpath;
3393
3394         ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
3395                         no_of_queue);
3396         if (ndev == NULL) {
3397                 vxge_debug_init(
3398                         vxge_hw_device_trace_level_get(hldev),
3399                 "%s : device allocation failed", __func__);
3400                 ret = -ENODEV;
3401                 goto _out0;
3402         }
3403
3404         vxge_debug_entryexit(
3405                 vxge_hw_device_trace_level_get(hldev),
3406                 "%s: %s:%d  Entering...",
3407                 ndev->name, __func__, __LINE__);
3408
3409         vdev = netdev_priv(ndev);
3410         memset(vdev, 0, sizeof(struct vxgedev));
3411
3412         vdev->ndev = ndev;
3413         vdev->devh = hldev;
3414         vdev->pdev = hldev->pdev;
3415         memcpy(&vdev->config, config, sizeof(struct vxge_config));
3416         vdev->rx_hwts = 0;
3417         vdev->titan1 = (vdev->pdev->revision == VXGE_HW_TITAN1_PCI_REVISION);
3418
3419         SET_NETDEV_DEV(ndev, &vdev->pdev->dev);
3420
3421         ndev->hw_features = NETIF_F_RXCSUM | NETIF_F_SG |
3422                 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
3423                 NETIF_F_TSO | NETIF_F_TSO6 |
3424                 NETIF_F_HW_VLAN_CTAG_TX;
3425         if (vdev->config.rth_steering != NO_STEERING)
3426                 ndev->hw_features |= NETIF_F_RXHASH;
3427
3428         ndev->features |= ndev->hw_features |
3429                 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER;
3430
3431
3432         ndev->netdev_ops = &vxge_netdev_ops;
3433
3434         ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
3435         INIT_WORK(&vdev->reset_task, vxge_reset);
3436
3437         vxge_initialize_ethtool_ops(ndev);
3438
3439         /* Allocate memory for vpath */
3440         vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
3441                                 no_of_vpath, GFP_KERNEL);
3442         if (!vdev->vpaths) {
3443                 vxge_debug_init(VXGE_ERR,
3444                         "%s: vpath memory allocation failed",
3445                         vdev->ndev->name);
3446                 ret = -ENOMEM;
3447                 goto _out1;
3448         }
3449
3450         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3451                 "%s : checksumming enabled", __func__);
3452
3453         if (high_dma) {
3454                 ndev->features |= NETIF_F_HIGHDMA;
3455                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3456                         "%s : using High DMA", __func__);
3457         }
3458
3459         /* MTU range: 68 - 9600 */
3460         ndev->min_mtu = VXGE_HW_MIN_MTU;
3461         ndev->max_mtu = VXGE_HW_MAX_MTU;
3462
3463         ret = register_netdev(ndev);
3464         if (ret) {
3465                 vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3466                         "%s: %s : device registration failed!",
3467                         ndev->name, __func__);
3468                 goto _out2;
3469         }
3470
3471         /*  Set the factory defined MAC address initially */
3472         ndev->addr_len = ETH_ALEN;
3473
3474         /* Make Link state as off at this point, when the Link change
3475          * interrupt comes the state will be automatically changed to
3476          * the right state.
3477          */
3478         netif_carrier_off(ndev);
3479
3480         vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
3481                 "%s: Ethernet device registered",
3482                 ndev->name);
3483
3484         hldev->ndev = ndev;
3485         *vdev_out = vdev;
3486
3487         /* Resetting the Device stats */
3488         status = vxge_hw_mrpcim_stats_access(
3489                                 hldev,
3490                                 VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
3491                                 0,
3492                                 0,
3493                                 &stat);
3494
3495         if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
3496                 vxge_debug_init(
3497                         vxge_hw_device_trace_level_get(hldev),
3498                         "%s: device stats clear returns"
3499                         "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);
3500
3501         vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
3502                 "%s: %s:%d  Exiting...",
3503                 ndev->name, __func__, __LINE__);
3504
3505         return ret;
3506 _out2:
3507         kfree(vdev->vpaths);
3508 _out1:
3509         free_netdev(ndev);
3510 _out0:
3511         return ret;
3512 }
3513
3514 /*
3515  * vxge_device_unregister
3516  *
3517  * This function will unregister and free network device
3518  */
3519 static void vxge_device_unregister(struct __vxge_hw_device *hldev)
3520 {
3521         struct vxgedev *vdev;
3522         struct net_device *dev;
3523         char buf[IFNAMSIZ];
3524
3525         dev = hldev->ndev;
3526         vdev = netdev_priv(dev);
3527
3528         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d", vdev->ndev->name,
3529                              __func__, __LINE__);
3530
3531         strlcpy(buf, dev->name, IFNAMSIZ);
3532
3533         flush_work(&vdev->reset_task);
3534
3535         /* in 2.6 will call stop() if device is up */
3536         unregister_netdev(dev);
3537
3538         kfree(vdev->vpaths);
3539
3540         vxge_debug_init(vdev->level_trace, "%s: ethernet device unregistered",
3541                         buf);
3542         vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d  Exiting...", buf,
3543                              __func__, __LINE__);
3544
3545         /* we are safe to free it now */
3546         free_netdev(dev);
3547 }
3548
3549 /*
3550  * vxge_callback_crit_err
3551  *
3552  * This function is called by the alarm handler in interrupt context.
3553  * Driver must analyze it based on the event type.
3554  */
3555 static void
3556 vxge_callback_crit_err(struct __vxge_hw_device *hldev,
3557                         enum vxge_hw_event type, u64 vp_id)
3558 {
3559         struct net_device *dev = hldev->ndev;
3560         struct vxgedev *vdev = netdev_priv(dev);
3561         struct vxge_vpath *vpath = NULL;
3562         int vpath_idx;
3563
3564         vxge_debug_entryexit(vdev->level_trace,
3565                 "%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
3566
3567         /* Note: This event type should be used for device wide
3568          * indications only - Serious errors, Slot freeze and critical errors
3569          */
3570         vdev->cric_err_event = type;
3571
3572         for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
3573                 vpath = &vdev->vpaths[vpath_idx];
3574                 if (vpath->device_id == vp_id)
3575                         break;
3576         }
3577
3578         if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
3579                 if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
3580                         vxge_debug_init(VXGE_ERR,
3581                                 "%s: Slot is frozen", vdev->ndev->name);
3582                 } else if (type == VXGE_HW_EVENT_SERR) {
3583                         vxge_debug_init(VXGE_ERR,
3584                                 "%s: Encountered Serious Error",
3585                                 vdev->ndev->name);
3586                 } else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
3587                         vxge_debug_init(VXGE_ERR,
3588                                 "%s: Encountered Critical Error",
3589                                 vdev->ndev->name);
3590         }
3591
3592         if ((type == VXGE_HW_EVENT_SERR) ||
3593                 (type == VXGE_HW_EVENT_SLOT_FREEZE)) {
3594                 if (unlikely(vdev->exec_mode))
3595                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3596         } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
3597                 vxge_hw_device_mask_all(hldev);
3598                 if (unlikely(vdev->exec_mode))
3599                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3600         } else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
3601                   (type == VXGE_HW_EVENT_VPATH_ERR)) {
3602
3603                 if (unlikely(vdev->exec_mode))
3604                         clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
3605                 else {
3606                         /* check if this vpath is already set for reset */
3607                         if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {
3608
3609                                 /* disable interrupts for this vpath */
3610                                 vxge_vpath_intr_disable(vdev, vpath_idx);
3611
3612                                 /* stop the queue for this vpath */
3613                                 netif_tx_stop_queue(vpath->fifo.txq);
3614                         }
3615                 }
3616         }
3617
3618         vxge_debug_entryexit(vdev->level_trace,
3619                 "%s: %s:%d  Exiting...",
3620                 vdev->ndev->name, __func__, __LINE__);
3621 }
3622
3623 static void verify_bandwidth(void)
3624 {
3625         int i, band_width, total = 0, equal_priority = 0;
3626
3627         /* 1. If user enters 0 for some fifo, give equal priority to all */
3628         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3629                 if (bw_percentage[i] == 0) {
3630                         equal_priority = 1;
3631                         break;
3632                 }
3633         }
3634
3635         if (!equal_priority) {
3636                 /* 2. If sum exceeds 100, give equal priority to all */
3637                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3638                         if (bw_percentage[i] == 0xFF)
3639                                 break;
3640
3641                         total += bw_percentage[i];
3642                         if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
3643                                 equal_priority = 1;
3644                                 break;
3645                         }
3646                 }
3647         }
3648
3649         if (!equal_priority) {
3650                 /* Is all the bandwidth consumed? */
3651                 if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
3652                         if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
3653                                 /* Split rest of bw equally among next VPs*/
3654                                 band_width =
3655                                   (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
3656                                         (VXGE_HW_MAX_VIRTUAL_PATHS - i);
3657                                 if (band_width < 2) /* min of 2% */
3658                                         equal_priority = 1;
3659                                 else {
3660                                         for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
3661                                                 i++)
3662                                                 bw_percentage[i] =
3663                                                         band_width;
3664                                 }
3665                         }
3666                 } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
3667                         equal_priority = 1;
3668         }
3669
3670         if (equal_priority) {
3671                 vxge_debug_init(VXGE_ERR,
3672                         "%s: Assigning equal bandwidth to all the vpaths",
3673                         VXGE_DRIVER_NAME);
3674                 bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
3675                                         VXGE_HW_MAX_VIRTUAL_PATHS;
3676                 for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3677                         bw_percentage[i] = bw_percentage[0];
3678         }
3679 }
3680
3681 /*
3682  * Vpath configuration
3683  */
3684 static int vxge_config_vpaths(struct vxge_hw_device_config *device_config,
3685                               u64 vpath_mask, struct vxge_config *config_param)
3686 {
3687         int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
3688         u32 txdl_size, txdl_per_memblock;
3689
3690         temp = driver_config->vpath_per_dev;
3691         if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
3692                 (max_config_dev == VXGE_MAX_CONFIG_DEV)) {
3693                 /* No more CPU. Return vpath number as zero.*/
3694                 if (driver_config->g_no_cpus == -1)
3695                         return 0;
3696
3697                 if (!driver_config->g_no_cpus)
3698                         driver_config->g_no_cpus =
3699                                 netif_get_num_default_rss_queues();
3700
3701                 driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
3702                 if (!driver_config->vpath_per_dev)
3703                         driver_config->vpath_per_dev = 1;
3704
3705                 for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3706                         if (!vxge_bVALn(vpath_mask, i, 1))
3707                                 continue;
3708                         else
3709                                 default_no_vpath++;
3710                 if (default_no_vpath < driver_config->vpath_per_dev)
3711                         driver_config->vpath_per_dev = default_no_vpath;
3712
3713                 driver_config->g_no_cpus = driver_config->g_no_cpus -
3714                                 (driver_config->vpath_per_dev * 2);
3715                 if (driver_config->g_no_cpus <= 0)
3716                         driver_config->g_no_cpus = -1;
3717         }
3718
3719         if (driver_config->vpath_per_dev == 1) {
3720                 vxge_debug_ll_config(VXGE_TRACE,
3721                         "%s: Disable tx and rx steering, "
3722                         "as single vpath is configured", VXGE_DRIVER_NAME);
3723                 config_param->rth_steering = NO_STEERING;
3724                 config_param->tx_steering_type = NO_STEERING;
3725                 device_config->rth_en = 0;
3726         }
3727
3728         /* configure bandwidth */
3729         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
3730                 device_config->vp_config[i].min_bandwidth = bw_percentage[i];
3731
3732         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3733                 device_config->vp_config[i].vp_id = i;
3734                 device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
3735                 if (no_of_vpaths < driver_config->vpath_per_dev) {
3736                         if (!vxge_bVALn(vpath_mask, i, 1)) {
3737                                 vxge_debug_ll_config(VXGE_TRACE,
3738                                         "%s: vpath: %d is not available",
3739                                         VXGE_DRIVER_NAME, i);
3740                                 continue;
3741                         } else {
3742                                 vxge_debug_ll_config(VXGE_TRACE,
3743                                         "%s: vpath: %d available",
3744                                         VXGE_DRIVER_NAME, i);
3745                                 no_of_vpaths++;
3746                         }
3747                 } else {
3748                         vxge_debug_ll_config(VXGE_TRACE,
3749                                 "%s: vpath: %d is not configured, "
3750                                 "max_config_vpath exceeded",
3751                                 VXGE_DRIVER_NAME, i);
3752                         break;
3753                 }
3754
3755                 /* Configure Tx fifo's */
3756                 device_config->vp_config[i].fifo.enable =
3757                                                 VXGE_HW_FIFO_ENABLE;
3758                 device_config->vp_config[i].fifo.max_frags =
3759                                 MAX_SKB_FRAGS + 1;
3760                 device_config->vp_config[i].fifo.memblock_size =
3761                         VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;
3762
3763                 txdl_size = device_config->vp_config[i].fifo.max_frags *
3764                                 sizeof(struct vxge_hw_fifo_txd);
3765                 txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;
3766
3767                 device_config->vp_config[i].fifo.fifo_blocks =
3768                         ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;
3769
3770                 device_config->vp_config[i].fifo.intr =
3771                                 VXGE_HW_FIFO_QUEUE_INTR_DISABLE;
3772
3773                 /* Configure tti properties */
3774                 device_config->vp_config[i].tti.intr_enable =
3775                                         VXGE_HW_TIM_INTR_ENABLE;
3776
3777                 device_config->vp_config[i].tti.btimer_val =
3778                         (VXGE_TTI_BTIMER_VAL * 1000) / 272;
3779
3780                 device_config->vp_config[i].tti.timer_ac_en =
3781                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3782
3783                 /* For msi-x with napi (each vector has a handler of its own) -
3784                  * Set CI to OFF for all vpaths
3785                  */
3786                 device_config->vp_config[i].tti.timer_ci_en =
3787                         VXGE_HW_TIM_TIMER_CI_DISABLE;
3788
3789                 device_config->vp_config[i].tti.timer_ri_en =
3790                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3791
3792                 device_config->vp_config[i].tti.util_sel =
3793                         VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;
3794
3795                 device_config->vp_config[i].tti.ltimer_val =
3796                         (VXGE_TTI_LTIMER_VAL * 1000) / 272;
3797
3798                 device_config->vp_config[i].tti.rtimer_val =
3799                         (VXGE_TTI_RTIMER_VAL * 1000) / 272;
3800
3801                 device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
3802                 device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
3803                 device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
3804                 device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
3805                 device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
3806                 device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
3807                 device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;
3808
3809                 /* Configure Rx rings */
3810                 device_config->vp_config[i].ring.enable  =
3811                                                 VXGE_HW_RING_ENABLE;
3812
3813                 device_config->vp_config[i].ring.ring_blocks  =
3814                                                 VXGE_HW_DEF_RING_BLOCKS;
3815
3816                 device_config->vp_config[i].ring.buffer_mode =
3817                         VXGE_HW_RING_RXD_BUFFER_MODE_1;
3818
3819                 device_config->vp_config[i].ring.rxds_limit  =
3820                                 VXGE_HW_DEF_RING_RXDS_LIMIT;
3821
3822                 device_config->vp_config[i].ring.scatter_mode =
3823                                         VXGE_HW_RING_SCATTER_MODE_A;
3824
3825                 /* Configure rti properties */
3826                 device_config->vp_config[i].rti.intr_enable =
3827                                         VXGE_HW_TIM_INTR_ENABLE;
3828
3829                 device_config->vp_config[i].rti.btimer_val =
3830                         (VXGE_RTI_BTIMER_VAL * 1000)/272;
3831
3832                 device_config->vp_config[i].rti.timer_ac_en =
3833                                                 VXGE_HW_TIM_TIMER_AC_ENABLE;
3834
3835                 device_config->vp_config[i].rti.timer_ci_en =
3836                                                 VXGE_HW_TIM_TIMER_CI_DISABLE;
3837
3838                 device_config->vp_config[i].rti.timer_ri_en =
3839                                                 VXGE_HW_TIM_TIMER_RI_DISABLE;
3840
3841                 device_config->vp_config[i].rti.util_sel =
3842                                 VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;
3843
3844                 device_config->vp_config[i].rti.urange_a =
3845                                                 RTI_RX_URANGE_A;
3846                 device_config->vp_config[i].rti.urange_b =
3847                                                 RTI_RX_URANGE_B;
3848                 device_config->vp_config[i].rti.urange_c =
3849                                                 RTI_RX_URANGE_C;
3850                 device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
3851                 device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
3852                 device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
3853                 device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;
3854
3855                 device_config->vp_config[i].rti.rtimer_val =
3856                         (VXGE_RTI_RTIMER_VAL * 1000) / 272;
3857
3858                 device_config->vp_config[i].rti.ltimer_val =
3859                         (VXGE_RTI_LTIMER_VAL * 1000) / 272;
3860
3861                 device_config->vp_config[i].rpa_strip_vlan_tag =
3862                         vlan_tag_strip;
3863         }
3864
3865         driver_config->vpath_per_dev = temp;
3866         return no_of_vpaths;
3867 }
3868
3869 /* initialize device configuratrions */
3870 static void vxge_device_config_init(struct vxge_hw_device_config *device_config,
3871                                     int *intr_type)
3872 {
3873         /* Used for CQRQ/SRQ. */
3874         device_config->dma_blockpool_initial =
3875                         VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;
3876
3877         device_config->dma_blockpool_max =
3878                         VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;
3879
3880         if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
3881                 max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;
3882
3883         if (!IS_ENABLED(CONFIG_PCI_MSI)) {
3884                 vxge_debug_init(VXGE_ERR,
3885                         "%s: This Kernel does not support "
3886                         "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
3887                 *intr_type = INTA;
3888         }
3889
3890         /* Configure whether MSI-X or IRQL. */
3891         switch (*intr_type) {
3892         case INTA:
3893                 device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
3894                 break;
3895
3896         case MSI_X:
3897                 device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX_ONE_SHOT;
3898                 break;
3899         }
3900
3901         /* Timer period between device poll */
3902         device_config->device_poll_millis = VXGE_TIMER_DELAY;
3903
3904         /* Configure mac based steering. */
3905         device_config->rts_mac_en = addr_learn_en;
3906
3907         /* Configure Vpaths */
3908         device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;
3909
3910         vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
3911                         __func__);
3912         vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
3913                         device_config->intr_mode);
3914         vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
3915                         device_config->device_poll_millis);
3916         vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
3917                         device_config->rth_en);
3918         vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
3919                         device_config->rth_it_type);
3920 }
3921
3922 static void vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3923 {
3924         int i;
3925
3926         vxge_debug_init(VXGE_TRACE,
3927                 "%s: %d Vpath(s) opened",
3928                 vdev->ndev->name, vdev->no_of_vpath);
3929
3930         switch (vdev->config.intr_type) {
3931         case INTA:
3932                 vxge_debug_init(VXGE_TRACE,
3933                         "%s: Interrupt type INTA", vdev->ndev->name);
3934                 break;
3935
3936         case MSI_X:
3937                 vxge_debug_init(VXGE_TRACE,
3938                         "%s: Interrupt type MSI-X", vdev->ndev->name);
3939                 break;
3940         }
3941
3942         if (vdev->config.rth_steering) {
3943                 vxge_debug_init(VXGE_TRACE,
3944                         "%s: RTH steering enabled for TCP_IPV4",
3945                         vdev->ndev->name);
3946         } else {
3947                 vxge_debug_init(VXGE_TRACE,
3948                         "%s: RTH steering disabled", vdev->ndev->name);
3949         }
3950
3951         switch (vdev->config.tx_steering_type) {
3952         case NO_STEERING:
3953                 vxge_debug_init(VXGE_TRACE,
3954                         "%s: Tx steering disabled", vdev->ndev->name);
3955                 break;
3956         case TX_PRIORITY_STEERING:
3957                 vxge_debug_init(VXGE_TRACE,
3958                         "%s: Unsupported tx steering option",
3959                         vdev->ndev->name);
3960                 vxge_debug_init(VXGE_TRACE,
3961                         "%s: Tx steering disabled", vdev->ndev->name);
3962                 vdev->config.tx_steering_type = 0;
3963                 break;
3964         case TX_VLAN_STEERING:
3965                 vxge_debug_init(VXGE_TRACE,
3966                         "%s: Unsupported tx steering option",
3967                         vdev->ndev->name);
3968                 vxge_debug_init(VXGE_TRACE,
3969                         "%s: Tx steering disabled", vdev->ndev->name);
3970                 vdev->config.tx_steering_type = 0;
3971                 break;
3972         case TX_MULTIQ_STEERING:
3973                 vxge_debug_init(VXGE_TRACE,
3974                         "%s: Tx multiqueue steering enabled",
3975                         vdev->ndev->name);
3976                 break;
3977         case TX_PORT_STEERING:
3978                 vxge_debug_init(VXGE_TRACE,
3979                         "%s: Tx port steering enabled",
3980                         vdev->ndev->name);
3981                 break;
3982         default:
3983                 vxge_debug_init(VXGE_ERR,
3984                         "%s: Unsupported tx steering type",
3985                         vdev->ndev->name);
3986                 vxge_debug_init(VXGE_TRACE,
3987                         "%s: Tx steering disabled", vdev->ndev->name);
3988                 vdev->config.tx_steering_type = 0;
3989         }
3990
3991         if (vdev->config.addr_learn_en)
3992                 vxge_debug_init(VXGE_TRACE,
3993                         "%s: MAC Address learning enabled", vdev->ndev->name);
3994
3995         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
3996                 if (!vxge_bVALn(vpath_mask, i, 1))
3997                         continue;
3998                 vxge_debug_ll_config(VXGE_TRACE,
3999                         "%s: MTU size - %d", vdev->ndev->name,
4000                         ((vdev->devh))->
4001                                 config.vp_config[i].mtu);
4002                 vxge_debug_init(VXGE_TRACE,
4003                         "%s: VLAN tag stripping %s", vdev->ndev->name,
4004                         ((vdev->devh))->
4005                                 config.vp_config[i].rpa_strip_vlan_tag
4006                         ? "Enabled" : "Disabled");
4007                 vxge_debug_ll_config(VXGE_TRACE,
4008                         "%s: Max frags : %d", vdev->ndev->name,
4009                         ((vdev->devh))->
4010                                 config.vp_config[i].fifo.max_frags);
4011                 break;
4012         }
4013 }
4014
4015 #ifdef CONFIG_PM
4016 /**
4017  * vxge_pm_suspend - vxge power management suspend entry point
4018  *
4019  */
4020 static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
4021 {
4022         return -ENOSYS;
4023 }
4024 /**
4025  * vxge_pm_resume - vxge power management resume entry point
4026  *
4027  */
4028 static int vxge_pm_resume(struct pci_dev *pdev)
4029 {
4030         return -ENOSYS;
4031 }
4032
4033 #endif
4034
4035 /**
4036  * vxge_io_error_detected - called when PCI error is detected
4037  * @pdev: Pointer to PCI device
4038  * @state: The current pci connection state
4039  *
4040  * This function is called after a PCI bus error affecting
4041  * this device has been detected.
4042  */
4043 static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
4044                                                 pci_channel_state_t state)
4045 {
4046         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4047         struct net_device *netdev = hldev->ndev;
4048
4049         netif_device_detach(netdev);
4050
4051         if (state == pci_channel_io_perm_failure)
4052                 return PCI_ERS_RESULT_DISCONNECT;
4053
4054         if (netif_running(netdev)) {
4055                 /* Bring down the card, while avoiding PCI I/O */
4056                 do_vxge_close(netdev, 0);
4057         }
4058
4059         pci_disable_device(pdev);
4060
4061         return PCI_ERS_RESULT_NEED_RESET;
4062 }
4063
4064 /**
4065  * vxge_io_slot_reset - called after the pci bus has been reset.
4066  * @pdev: Pointer to PCI device
4067  *
4068  * Restart the card from scratch, as if from a cold-boot.
4069  * At this point, the card has exprienced a hard reset,
4070  * followed by fixups by BIOS, and has its config space
4071  * set up identically to what it was at cold boot.
4072  */
4073 static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
4074 {
4075         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4076         struct net_device *netdev = hldev->ndev;
4077
4078         struct vxgedev *vdev = netdev_priv(netdev);
4079
4080         if (pci_enable_device(pdev)) {
4081                 netdev_err(netdev, "Cannot re-enable device after reset\n");
4082                 return PCI_ERS_RESULT_DISCONNECT;
4083         }
4084
4085         pci_set_master(pdev);
4086         do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
4087
4088         return PCI_ERS_RESULT_RECOVERED;
4089 }
4090
4091 /**
4092  * vxge_io_resume - called when traffic can start flowing again.
4093  * @pdev: Pointer to PCI device
4094  *
4095  * This callback is called when the error recovery driver tells
4096  * us that its OK to resume normal operation.
4097  */
4098 static void vxge_io_resume(struct pci_dev *pdev)
4099 {
4100         struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4101         struct net_device *netdev = hldev->ndev;
4102
4103         if (netif_running(netdev)) {
4104                 if (vxge_open(netdev)) {
4105                         netdev_err(netdev,
4106                                    "Can't bring device back up after reset\n");
4107                         return;
4108                 }
4109         }
4110
4111         netif_device_attach(netdev);
4112 }
4113
4114 static inline u32 vxge_get_num_vfs(u64 function_mode)
4115 {
4116         u32 num_functions = 0;
4117
4118         switch (function_mode) {
4119         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4120         case VXGE_HW_FUNCTION_MODE_SRIOV_8:
4121                 num_functions = 8;
4122                 break;
4123         case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4124                 num_functions = 1;
4125                 break;
4126         case VXGE_HW_FUNCTION_MODE_SRIOV:
4127         case VXGE_HW_FUNCTION_MODE_MRIOV:
4128         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
4129                 num_functions = 17;
4130                 break;
4131         case VXGE_HW_FUNCTION_MODE_SRIOV_4:
4132                 num_functions = 4;
4133                 break;
4134         case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
4135                 num_functions = 2;
4136                 break;
4137         case VXGE_HW_FUNCTION_MODE_MRIOV_8:
4138                 num_functions = 8; /* TODO */
4139                 break;
4140         }
4141         return num_functions;
4142 }
4143
4144 int vxge_fw_upgrade(struct vxgedev *vdev, char *fw_name, int override)
4145 {
4146         struct __vxge_hw_device *hldev = vdev->devh;
4147         u32 maj, min, bld, cmaj, cmin, cbld;
4148         enum vxge_hw_status status;
4149         const struct firmware *fw;
4150         int ret;
4151
4152         ret = reject_firmware(&fw, fw_name, &vdev->pdev->dev);
4153         if (ret) {
4154                 vxge_debug_init(VXGE_ERR, "%s: Firmware file '%s' not found",
4155                                 VXGE_DRIVER_NAME, fw_name);
4156                 goto out;
4157         }
4158
4159         /* Load the new firmware onto the adapter */
4160         status = vxge_update_fw_image(hldev, fw->data, fw->size);
4161         if (status != VXGE_HW_OK) {
4162                 vxge_debug_init(VXGE_ERR,
4163                                 "%s: FW image download to adapter failed '%s'.",
4164                                 VXGE_DRIVER_NAME, fw_name);
4165                 ret = -EIO;
4166                 goto out;
4167         }
4168
4169         /* Read the version of the new firmware */
4170         status = vxge_hw_upgrade_read_version(hldev, &maj, &min, &bld);
4171         if (status != VXGE_HW_OK) {
4172                 vxge_debug_init(VXGE_ERR,
4173                                 "%s: Upgrade read version failed '%s'.",
4174                                 VXGE_DRIVER_NAME, fw_name);
4175                 ret = -EIO;
4176                 goto out;
4177         }
4178
4179         cmaj = vdev->config.device_hw_info.fw_version.major;
4180         cmin = vdev->config.device_hw_info.fw_version.minor;
4181         cbld = vdev->config.device_hw_info.fw_version.build;
4182         /* It's possible the version in /lib/firmware is not the latest version.
4183          * If so, we could get into a loop of trying to upgrade to the latest
4184          * and flashing the older version.
4185          */
4186         if (VXGE_FW_VER(maj, min, bld) == VXGE_FW_VER(cmaj, cmin, cbld) &&
4187             !override) {
4188                 ret = -EINVAL;
4189                 goto out;
4190         }
4191
4192         printk(KERN_NOTICE "Upgrade to firmware version %d.%d.%d commencing\n",
4193                maj, min, bld);
4194
4195         /* Flash the adapter with the new firmware */
4196         status = vxge_hw_flash_fw(hldev);
4197         if (status != VXGE_HW_OK) {
4198                 vxge_debug_init(VXGE_ERR, "%s: Upgrade commit failed '%s'.",
4199                                 VXGE_DRIVER_NAME, fw_name);
4200                 ret = -EIO;
4201                 goto out;
4202         }
4203
4204         printk(KERN_NOTICE "Upgrade of firmware successful!  Adapter must be "
4205                "hard reset before using, thus requiring a system reboot or a "
4206                "hotplug event.\n");
4207
4208 out:
4209         release_firmware(fw);
4210         return ret;
4211 }
4212
4213 static int vxge_probe_fw_update(struct vxgedev *vdev)
4214 {
4215         u32 maj, min, bld;
4216         int ret, gpxe = 0;
4217         char *fw_name;
4218
4219         maj = vdev->config.device_hw_info.fw_version.major;
4220         min = vdev->config.device_hw_info.fw_version.minor;
4221         bld = vdev->config.device_hw_info.fw_version.build;
4222
4223         if (VXGE_FW_VER(maj, min, bld) == VXGE_CERT_FW_VER)
4224                 return 0;
4225
4226         /* Ignore the build number when determining if the current firmware is
4227          * "too new" to load the driver
4228          */
4229         if (VXGE_FW_VER(maj, min, 0) > VXGE_CERT_FW_VER) {
4230                 vxge_debug_init(VXGE_ERR, "%s: Firmware newer than last known "
4231                                 "version, unable to load driver\n",
4232                                 VXGE_DRIVER_NAME);
4233                 return -EINVAL;
4234         }
4235
4236         /* Firmware 1.4.4 and older cannot be upgraded, and is too ancient to
4237          * work with this driver.
4238          */
4239         if (VXGE_FW_VER(maj, min, bld) <= VXGE_FW_DEAD_VER) {
4240                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d cannot be "
4241                                 "upgraded\n", VXGE_DRIVER_NAME, maj, min, bld);
4242                 return -EINVAL;
4243         }
4244
4245         /* If file not specified, determine gPXE or not */
4246         if (VXGE_FW_VER(maj, min, bld) >= VXGE_EPROM_FW_VER) {
4247                 int i;
4248                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++)
4249                         if (vdev->devh->eprom_versions[i]) {
4250                                 gpxe = 1;
4251                                 break;
4252                         }
4253         }
4254         if (gpxe)
4255                 fw_name = "/*(DEBLOBBED)*/";
4256         else
4257                 fw_name = "/*(DEBLOBBED)*/";
4258
4259         ret = vxge_fw_upgrade(vdev, fw_name, 0);
4260         /* -EINVAL and -ENOENT are not fatal errors for flashing firmware on
4261          * probe, so ignore them
4262          */
4263         if (ret != -EINVAL && ret != -ENOENT)
4264                 return -EIO;
4265         else
4266                 ret = 0;
4267
4268         if (VXGE_FW_VER(VXGE_CERT_FW_VER_MAJOR, VXGE_CERT_FW_VER_MINOR, 0) >
4269             VXGE_FW_VER(maj, min, 0)) {
4270                 vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d is too old to"
4271                                 " be used with this driver.",
4272                                 VXGE_DRIVER_NAME, maj, min, bld);
4273                 return -EINVAL;
4274         }
4275
4276         return ret;
4277 }
4278
4279 static int is_sriov_initialized(struct pci_dev *pdev)
4280 {
4281         int pos;
4282         u16 ctrl;
4283
4284         pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
4285         if (pos) {
4286                 pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &ctrl);
4287                 if (ctrl & PCI_SRIOV_CTRL_VFE)
4288                         return 1;
4289         }
4290         return 0;
4291 }
4292
4293 static const struct vxge_hw_uld_cbs vxge_callbacks = {
4294         .link_up = vxge_callback_link_up,
4295         .link_down = vxge_callback_link_down,
4296         .crit_err = vxge_callback_crit_err,
4297 };
4298
4299 /**
4300  * vxge_probe
4301  * @pdev : structure containing the PCI related information of the device.
4302  * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
4303  * Description:
4304  * This function is called when a new PCI device gets detected and initializes
4305  * it.
4306  * Return value:
4307  * returns 0 on success and negative on failure.
4308  *
4309  */
4310 static int
4311 vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
4312 {
4313         struct __vxge_hw_device *hldev;
4314         enum vxge_hw_status status;
4315         int ret;
4316         int high_dma = 0;
4317         u64 vpath_mask = 0;
4318         struct vxgedev *vdev;
4319         struct vxge_config *ll_config = NULL;
4320         struct vxge_hw_device_config *device_config = NULL;
4321         struct vxge_hw_device_attr attr;
4322         int i, j, no_of_vpath = 0, max_vpath_supported = 0;
4323         u8 *macaddr;
4324         struct vxge_mac_addrs *entry;
4325         static int bus = -1, device = -1;
4326         u32 host_type;
4327         u8 new_device = 0;
4328         enum vxge_hw_status is_privileged;
4329         u32 function_mode;
4330         u32 num_vfs = 0;
4331
4332         vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
4333         attr.pdev = pdev;
4334
4335         /* In SRIOV-17 mode, functions of the same adapter
4336          * can be deployed on different buses
4337          */
4338         if (((bus != pdev->bus->number) || (device != PCI_SLOT(pdev->devfn))) &&
4339             !pdev->is_virtfn)
4340                 new_device = 1;
4341
4342         bus = pdev->bus->number;
4343         device = PCI_SLOT(pdev->devfn);
4344
4345         if (new_device) {
4346                 if (driver_config->config_dev_cnt &&
4347                    (driver_config->config_dev_cnt !=
4348                         driver_config->total_dev_cnt))
4349                         vxge_debug_init(VXGE_ERR,
4350                                 "%s: Configured %d of %d devices",
4351                                 VXGE_DRIVER_NAME,
4352                                 driver_config->config_dev_cnt,
4353                                 driver_config->total_dev_cnt);
4354                 driver_config->config_dev_cnt = 0;
4355                 driver_config->total_dev_cnt = 0;
4356         }
4357
4358         /* Now making the CPU based no of vpath calculation
4359          * applicable for individual functions as well.
4360          */
4361         driver_config->g_no_cpus = 0;
4362         driver_config->vpath_per_dev = max_config_vpath;
4363
4364         driver_config->total_dev_cnt++;
4365         if (++driver_config->config_dev_cnt > max_config_dev) {
4366                 ret = 0;
4367                 goto _exit0;
4368         }
4369
4370         device_config = kzalloc(sizeof(struct vxge_hw_device_config),
4371                 GFP_KERNEL);
4372         if (!device_config) {
4373                 ret = -ENOMEM;
4374                 vxge_debug_init(VXGE_ERR,
4375                         "device_config : malloc failed %s %d",
4376                         __FILE__, __LINE__);
4377                 goto _exit0;
4378         }
4379
4380         ll_config = kzalloc(sizeof(struct vxge_config), GFP_KERNEL);
4381         if (!ll_config) {
4382                 ret = -ENOMEM;
4383                 vxge_debug_init(VXGE_ERR,
4384                         "device_config : malloc failed %s %d",
4385                         __FILE__, __LINE__);
4386                 goto _exit0;
4387         }
4388         ll_config->tx_steering_type = TX_MULTIQ_STEERING;
4389         ll_config->intr_type = MSI_X;
4390         ll_config->napi_weight = NEW_NAPI_WEIGHT;
4391         ll_config->rth_steering = RTH_STEERING;
4392
4393         /* get the default configuration parameters */
4394         vxge_hw_device_config_default_get(device_config);
4395
4396         /* initialize configuration parameters */
4397         vxge_device_config_init(device_config, &ll_config->intr_type);
4398
4399         ret = pci_enable_device(pdev);
4400         if (ret) {
4401                 vxge_debug_init(VXGE_ERR,
4402                         "%s : can not enable PCI device", __func__);
4403                 goto _exit0;
4404         }
4405
4406         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4407                 vxge_debug_ll_config(VXGE_TRACE,
4408                         "%s : using 64bit DMA", __func__);
4409
4410                 high_dma = 1;
4411
4412                 if (pci_set_consistent_dma_mask(pdev,
4413                                                 DMA_BIT_MASK(64))) {
4414                         vxge_debug_init(VXGE_ERR,
4415                                 "%s : unable to obtain 64bit DMA for "
4416                                 "consistent allocations", __func__);
4417                         ret = -ENOMEM;
4418                         goto _exit1;
4419                 }
4420         } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
4421                 vxge_debug_ll_config(VXGE_TRACE,
4422                         "%s : using 32bit DMA", __func__);
4423         } else {
4424                 ret = -ENOMEM;
4425                 goto _exit1;
4426         }
4427
4428         ret = pci_request_region(pdev, 0, VXGE_DRIVER_NAME);
4429         if (ret) {
4430                 vxge_debug_init(VXGE_ERR,
4431                         "%s : request regions failed", __func__);
4432                 goto _exit1;
4433         }
4434
4435         pci_set_master(pdev);
4436
4437         attr.bar0 = pci_ioremap_bar(pdev, 0);
4438         if (!attr.bar0) {
4439                 vxge_debug_init(VXGE_ERR,
4440                         "%s : cannot remap io memory bar0", __func__);
4441                 ret = -ENODEV;
4442                 goto _exit2;
4443         }
4444         vxge_debug_ll_config(VXGE_TRACE,
4445                 "pci ioremap bar0: %p:0x%llx",
4446                 attr.bar0,
4447                 (unsigned long long)pci_resource_start(pdev, 0));
4448
4449         status = vxge_hw_device_hw_info_get(attr.bar0,
4450                         &ll_config->device_hw_info);
4451         if (status != VXGE_HW_OK) {
4452                 vxge_debug_init(VXGE_ERR,
4453                         "%s: Reading of hardware info failed."
4454                         "Please try upgrading the firmware.", VXGE_DRIVER_NAME);
4455                 ret = -EINVAL;
4456                 goto _exit3;
4457         }
4458
4459         vpath_mask = ll_config->device_hw_info.vpath_mask;
4460         if (vpath_mask == 0) {
4461                 vxge_debug_ll_config(VXGE_TRACE,
4462                         "%s: No vpaths available in device", VXGE_DRIVER_NAME);
4463                 ret = -EINVAL;
4464                 goto _exit3;
4465         }
4466
4467         vxge_debug_ll_config(VXGE_TRACE,
4468                 "%s:%d  Vpath mask = %llx", __func__, __LINE__,
4469                 (unsigned long long)vpath_mask);
4470
4471         function_mode = ll_config->device_hw_info.function_mode;
4472         host_type = ll_config->device_hw_info.host_type;
4473         is_privileged = __vxge_hw_device_is_privilaged(host_type,
4474                 ll_config->device_hw_info.func_id);
4475
4476         /* Check how many vpaths are available */
4477         for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4478                 if (!((vpath_mask) & vxge_mBIT(i)))
4479                         continue;
4480                 max_vpath_supported++;
4481         }
4482
4483         if (new_device)
4484                 num_vfs = vxge_get_num_vfs(function_mode) - 1;
4485
4486         /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4487         if (is_sriov(function_mode) && !is_sriov_initialized(pdev) &&
4488            (ll_config->intr_type != INTA)) {
4489                 ret = pci_enable_sriov(pdev, num_vfs);
4490                 if (ret)
4491                         vxge_debug_ll_config(VXGE_ERR,
4492                                 "Failed in enabling SRIOV mode: %d\n", ret);
4493                         /* No need to fail out, as an error here is non-fatal */
4494         }
4495
4496         /*
4497          * Configure vpaths and get driver configured number of vpaths
4498          * which is less than or equal to the maximum vpaths per function.
4499          */
4500         no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
4501         if (!no_of_vpath) {
4502                 vxge_debug_ll_config(VXGE_ERR,
4503                         "%s: No more vpaths to configure", VXGE_DRIVER_NAME);
4504                 ret = 0;
4505                 goto _exit3;
4506         }
4507
4508         /* Setting driver callbacks */
4509         attr.uld_callbacks = &vxge_callbacks;
4510
4511         status = vxge_hw_device_initialize(&hldev, &attr, device_config);
4512         if (status != VXGE_HW_OK) {
4513                 vxge_debug_init(VXGE_ERR,
4514                         "Failed to initialize device (%d)", status);
4515                         ret = -EINVAL;
4516                         goto _exit3;
4517         }
4518
4519         if (VXGE_FW_VER(ll_config->device_hw_info.fw_version.major,
4520                         ll_config->device_hw_info.fw_version.minor,
4521                         ll_config->device_hw_info.fw_version.build) >=
4522             VXGE_EPROM_FW_VER) {
4523                 struct eprom_image img[VXGE_HW_MAX_ROM_IMAGES];
4524
4525                 status = vxge_hw_vpath_eprom_img_ver_get(hldev, img);
4526                 if (status != VXGE_HW_OK) {
4527                         vxge_debug_init(VXGE_ERR, "%s: Reading of EPROM failed",
4528                                         VXGE_DRIVER_NAME);
4529                         /* This is a non-fatal error, continue */
4530                 }
4531
4532                 for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++) {
4533                         hldev->eprom_versions[i] = img[i].version;
4534                         if (!img[i].is_valid)
4535                                 break;
4536                         vxge_debug_init(VXGE_TRACE, "%s: EPROM %d, version "
4537                                         "%d.%d.%d.%d", VXGE_DRIVER_NAME, i,
4538                                         VXGE_EPROM_IMG_MAJOR(img[i].version),
4539                                         VXGE_EPROM_IMG_MINOR(img[i].version),
4540                                         VXGE_EPROM_IMG_FIX(img[i].version),
4541                                         VXGE_EPROM_IMG_BUILD(img[i].version));
4542                 }
4543         }
4544
4545         /* if FCS stripping is not disabled in MAC fail driver load */
4546         status = vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask);
4547         if (status != VXGE_HW_OK) {
4548                 vxge_debug_init(VXGE_ERR, "%s: FCS stripping is enabled in MAC"
4549                                 " failing driver load", VXGE_DRIVER_NAME);
4550                 ret = -EINVAL;
4551                 goto _exit4;
4552         }
4553
4554         /* Always enable HWTS.  This will always cause the FCS to be invalid,
4555          * due to the fact that HWTS is using the FCS as the location of the
4556          * timestamp.  The HW FCS checking will still correctly determine if
4557          * there is a valid checksum, and the FCS is being removed by the driver
4558          * anyway.  So no fucntionality is being lost.  Since it is always
4559          * enabled, we now simply use the ioctl call to set whether or not the
4560          * driver should be paying attention to the HWTS.
4561          */
4562         if (is_privileged == VXGE_HW_OK) {
4563                 status = vxge_timestamp_config(hldev);
4564                 if (status != VXGE_HW_OK) {
4565                         vxge_debug_init(VXGE_ERR, "%s: HWTS enable failed",
4566                                         VXGE_DRIVER_NAME);
4567                         ret = -EFAULT;
4568                         goto _exit4;
4569                 }
4570         }
4571
4572         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4573
4574         /* set private device info */
4575         pci_set_drvdata(pdev, hldev);
4576
4577         ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
4578         ll_config->addr_learn_en = addr_learn_en;
4579         ll_config->rth_algorithm = RTH_ALG_JENKINS;
4580         ll_config->rth_hash_type_tcpipv4 = 1;
4581         ll_config->rth_hash_type_ipv4 = 0;
4582         ll_config->rth_hash_type_tcpipv6 = 0;
4583         ll_config->rth_hash_type_ipv6 = 0;
4584         ll_config->rth_hash_type_tcpipv6ex = 0;
4585         ll_config->rth_hash_type_ipv6ex = 0;
4586         ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
4587         ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4588         ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
4589
4590         ret = vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
4591                                    &vdev);
4592         if (ret) {
4593                 ret = -EINVAL;
4594                 goto _exit4;
4595         }
4596
4597         ret = vxge_probe_fw_update(vdev);
4598         if (ret)
4599                 goto _exit5;
4600
4601         vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
4602         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4603                 vxge_hw_device_trace_level_get(hldev));
4604
4605         /* set private HW device info */
4606         vdev->mtu = VXGE_HW_DEFAULT_MTU;
4607         vdev->bar0 = attr.bar0;
4608         vdev->max_vpath_supported = max_vpath_supported;
4609         vdev->no_of_vpath = no_of_vpath;
4610
4611         /* Virtual Path count */
4612         for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
4613                 if (!vxge_bVALn(vpath_mask, i, 1))
4614                         continue;
4615                 if (j >= vdev->no_of_vpath)
4616                         break;
4617
4618                 vdev->vpaths[j].is_configured = 1;
4619                 vdev->vpaths[j].device_id = i;
4620                 vdev->vpaths[j].ring.driver_id = j;
4621                 vdev->vpaths[j].vdev = vdev;
4622                 vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
4623                 memcpy((u8 *)vdev->vpaths[j].macaddr,
4624                                 ll_config->device_hw_info.mac_addrs[i],
4625                                 ETH_ALEN);
4626
4627                 /* Initialize the mac address list header */
4628                 INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);
4629
4630                 vdev->vpaths[j].mac_addr_cnt = 0;
4631                 vdev->vpaths[j].mcast_addr_cnt = 0;
4632                 j++;
4633         }
4634         vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
4635         vdev->max_config_port = max_config_port;
4636
4637         vdev->vlan_tag_strip = vlan_tag_strip;
4638
4639         /* map the hashing selector table to the configured vpaths */
4640         for (i = 0; i < vdev->no_of_vpath; i++)
4641                 vdev->vpath_selector[i] = vpath_selector[i];
4642
4643         macaddr = (u8 *)vdev->vpaths[0].macaddr;
4644
4645         ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
4646         ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
4647         ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4648
4649         vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4650                 vdev->ndev->name, ll_config->device_hw_info.serial_number);
4651
4652         vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4653                 vdev->ndev->name, ll_config->device_hw_info.part_number);
4654
4655         vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4656                 vdev->ndev->name, ll_config->device_hw_info.product_desc);
4657
4658         vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
4659                 vdev->ndev->name, macaddr);
4660
4661         vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
4662                 vdev->ndev->name, vxge_hw_device_link_width_get(hldev));
4663
4664         vxge_debug_init(VXGE_TRACE,
4665                 "%s: Firmware version : %s Date : %s", vdev->ndev->name,
4666                 ll_config->device_hw_info.fw_version.version,
4667                 ll_config->device_hw_info.fw_date.date);
4668
4669         if (new_device) {
4670                 switch (ll_config->device_hw_info.function_mode) {
4671                 case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
4672                         vxge_debug_init(VXGE_TRACE,
4673                         "%s: Single Function Mode Enabled", vdev->ndev->name);
4674                 break;
4675                 case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
4676                         vxge_debug_init(VXGE_TRACE,
4677                         "%s: Multi Function Mode Enabled", vdev->ndev->name);
4678                 break;
4679                 case VXGE_HW_FUNCTION_MODE_SRIOV:
4680                         vxge_debug_init(VXGE_TRACE,
4681                         "%s: Single Root IOV Mode Enabled", vdev->ndev->name);
4682                 break;
4683                 case VXGE_HW_FUNCTION_MODE_MRIOV:
4684                         vxge_debug_init(VXGE_TRACE,
4685                         "%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
4686                 break;
4687                 }
4688         }
4689
4690         vxge_print_parm(vdev, vpath_mask);
4691
4692         /* Store the fw version for ethttool option */
4693         strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
4694         memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);
4695
4696         /* Copy the station mac address to the list */
4697         for (i = 0; i < vdev->no_of_vpath; i++) {
4698                 entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_KERNEL);
4699                 if (NULL == entry) {
4700                         vxge_debug_init(VXGE_ERR,
4701                                 "%s: mac_addr_list : memory allocation failed",
4702                                 vdev->ndev->name);
4703                         ret = -EPERM;
4704                         goto _exit6;
4705                 }
4706                 macaddr = (u8 *)&entry->macaddr;
4707                 memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
4708                 list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
4709                 vdev->vpaths[i].mac_addr_cnt = 1;
4710         }
4711
4712         kfree(device_config);
4713
4714         /*
4715          * INTA is shared in multi-function mode. This is unlike the INTA
4716          * implementation in MR mode, where each VH has its own INTA message.
4717          * - INTA is masked (disabled) as long as at least one function sets
4718          * its TITAN_MASK_ALL_INT.ALARM bit.
4719          * - INTA is unmasked (enabled) when all enabled functions have cleared
4720          * their own TITAN_MASK_ALL_INT.ALARM bit.
4721          * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
4722          * Though this driver leaves the top level interrupts unmasked while
4723          * leaving the required module interrupt bits masked on exit, there
4724          * could be a rougue driver around that does not follow this procedure
4725          * resulting in a failure to generate interrupts. The following code is
4726          * present to prevent such a failure.
4727          */
4728
4729         if (ll_config->device_hw_info.function_mode ==
4730                 VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
4731                 if (vdev->config.intr_type == INTA)
4732                         vxge_hw_device_unmask_all(hldev);
4733
4734         vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
4735                 vdev->ndev->name, __func__, __LINE__);
4736
4737         vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
4738         VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
4739                 vxge_hw_device_trace_level_get(hldev));
4740
4741         kfree(ll_config);
4742         return 0;
4743
4744 _exit6:
4745         for (i = 0; i < vdev->no_of_vpath; i++)
4746                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4747 _exit5:
4748         vxge_device_unregister(hldev);
4749 _exit4:
4750         vxge_hw_device_terminate(hldev);
4751         pci_disable_sriov(pdev);
4752 _exit3:
4753         iounmap(attr.bar0);
4754 _exit2:
4755         pci_release_region(pdev, 0);
4756 _exit1:
4757         pci_disable_device(pdev);
4758 _exit0:
4759         kfree(ll_config);
4760         kfree(device_config);
4761         driver_config->config_dev_cnt--;
4762         driver_config->total_dev_cnt--;
4763         return ret;
4764 }
4765
4766 /**
4767  * vxge_rem_nic - Free the PCI device
4768  * @pdev: structure containing the PCI related information of the device.
4769  * Description: This function is called by the Pci subsystem to release a
4770  * PCI device and free up all resource held up by the device.
4771  */
4772 static void vxge_remove(struct pci_dev *pdev)
4773 {
4774         struct __vxge_hw_device *hldev;
4775         struct vxgedev *vdev;
4776         int i;
4777
4778         hldev = pci_get_drvdata(pdev);
4779         if (hldev == NULL)
4780                 return;
4781
4782         vdev = netdev_priv(hldev->ndev);
4783
4784         vxge_debug_entryexit(vdev->level_trace, "%s:%d", __func__, __LINE__);
4785         vxge_debug_init(vdev->level_trace, "%s : removing PCI device...",
4786                         __func__);
4787
4788         for (i = 0; i < vdev->no_of_vpath; i++)
4789                 vxge_free_mac_add_list(&vdev->vpaths[i]);
4790
4791         vxge_device_unregister(hldev);
4792         /* Do not call pci_disable_sriov here, as it will break child devices */
4793         vxge_hw_device_terminate(hldev);
4794         iounmap(vdev->bar0);
4795         pci_release_region(pdev, 0);
4796         pci_disable_device(pdev);
4797         driver_config->config_dev_cnt--;
4798         driver_config->total_dev_cnt--;
4799
4800         vxge_debug_init(vdev->level_trace, "%s:%d Device unregistered",
4801                         __func__, __LINE__);
4802         vxge_debug_entryexit(vdev->level_trace, "%s:%d  Exiting...", __func__,
4803                              __LINE__);
4804 }
4805
4806 static const struct pci_error_handlers vxge_err_handler = {
4807         .error_detected = vxge_io_error_detected,
4808         .slot_reset = vxge_io_slot_reset,
4809         .resume = vxge_io_resume,
4810 };
4811
4812 static struct pci_driver vxge_driver = {
4813         .name = VXGE_DRIVER_NAME,
4814         .id_table = vxge_id_table,
4815         .probe = vxge_probe,
4816         .remove = vxge_remove,
4817 #ifdef CONFIG_PM
4818         .suspend = vxge_pm_suspend,
4819         .resume = vxge_pm_resume,
4820 #endif
4821         .err_handler = &vxge_err_handler,
4822 };
4823
4824 static int __init
4825 vxge_starter(void)
4826 {
4827         int ret = 0;
4828
4829         pr_info("Copyright(c) 2002-2010 Exar Corp.\n");
4830         pr_info("Driver version: %s\n", DRV_VERSION);
4831
4832         verify_bandwidth();
4833
4834         driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
4835         if (!driver_config)
4836                 return -ENOMEM;
4837
4838         ret = pci_register_driver(&vxge_driver);
4839         if (ret) {
4840                 kfree(driver_config);
4841                 goto err;
4842         }
4843
4844         if (driver_config->config_dev_cnt &&
4845            (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
4846                 vxge_debug_init(VXGE_ERR,
4847                         "%s: Configured %d of %d devices",
4848                         VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
4849                         driver_config->total_dev_cnt);
4850 err:
4851         return ret;
4852 }
4853
4854 static void __exit
4855 vxge_closer(void)
4856 {
4857         pci_unregister_driver(&vxge_driver);
4858         kfree(driver_config);
4859 }
4860 module_init(vxge_starter);
4861 module_exit(vxge_closer);